Solve the inequality 1 2p + 7 ) 1 39​

Answers

Answer 1

Answer: p=11

Step-by-step explanation:

12p+7)139

-7 -7

12p)132

÷12 ÷12

P)11

Answer 2

Answer:

p= 11

Step-by-step explanation:

1 2p + 7 > 1 39​

collection of like term

12p > 139 - 7

12p > 132

Divide both side by the coefficient of p

12p/12 > 132/12

p = 11


Related Questions

Phoebe runs at 12km/h and walks at 5km/h. One afternoon she ran and walked a total of 17km. If she ran for the same length of time as she walked for how long did she run

Answers

If correct, it should be one hour. Maybe try and solve it yourself to see if this makes sense

Step-by-step explanation:

Assume the total trip that afternoon took t hours

12(t/2) + 5(t/2) = 17 => t = 2

So she ran for 1 hour.

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. The arena wants the probability of being shortlisted to be 0.14. What is this as a percentage and a fraction? What is the probability of not being shortlisted?

Give your answer as a decimal. Those shortlisted are entered into a final game of chance. There are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). To win, a company needs to take out two golden balls. The first ball is not replaced.


What is the probability of any company winning advertising space on their volley ball team jerseys?

Answers

Answer: 7/50

14%

1/30

Step-by-step explanation:0.14 to fraction =0.14/100=14/100=7/50

0.14 to %= 0.14 ×100=14%

Total number of balls=6

Blue balls=2

Golden balls=2

Green balls=2

Probability of picking the first ball=1/6

Probability of picking the second ball= 1/5

P(winning wit 2 golden balls)=1/6×1/5=1/30

The probability of any company winning advertising space on their volleyball team jerseys is approximately 0.0093, or 0.93%.

Probability of Being Shortlisted

The probability of being shortlisted is given as 0.14.

As a Percentage:

[tex]\[ 0.14 \times 100 = 14\% \][/tex]

As a Fraction:

[tex]\[ 0.14 = \frac{14}{100} = \frac{7}{50} \][/tex]

Probability of Not Being Shortlisted:

The probability of not being shortlisted is:

[tex]\[ 1 - 0.14 = 0.86 \][/tex]

Probability of Winning Advertising Space

To win the advertising space, a company needs to draw two golden balls consecutively without replacement from a bag containing 6 balls (2 blue, 2 green, and 2 golden).

Total Balls:

There are 6 balls in total.

First Draw:

The probability of drawing a golden ball first:

[tex]\[ \frac{2}{6} = \frac{1}{3} \][/tex]

Second Draw:

After drawing one golden ball, there are 5 balls left, including 1 golden ball:

The probability of drawing a golden ball second:

[tex]\[ \frac{1}{5} \][/tex]

Combined Probability:

The probability of drawing two golden balls consecutively is the product of the individual probabilities:

[tex]\[ \frac{1}{3} \times \frac{1}{5} = \frac{1}{15} \][/tex]

Final Probability of Winning Advertising Space

Since the company needs to be shortlisted first and then draw the two golden balls to win the advertising space, the combined probability is:

[tex]\[0.14 \times \frac{1}{15}\][/tex]

Convert 0.14 to a fraction:

[tex]\[0.14 = \frac{7}{50}\][/tex]

Multiply the probabilities:

[tex]\[\frac{7}{50} \times \frac{1}{15} = \frac{7}{750}\][/tex]

Convert to a decimal:

[tex]\[\frac{7}{750} \approx 0.0093\][/tex]

If the last digit of weight measurement is equally likely to be any of the digits 0 through 9. Round your answers to one decimal place (e.g. 98.7). What is the probability that the last digit is 0?

Answers

Answer:Probability that the last digit is 0=0.1

Step-by-step explanation:

The likely digits for the last digits runs from 0 through 9 giving a total of 10 digits

The fore P(last digit to be 0) = 1/10 = 0.1

Final answer:

If the last digit of a weight measurement rounded to the nearest tenth place is equally likely to be any of the digits from 0 through 9, then the probability that the last digit is 0 is 0.1 or 10%.

Explanation:

The question is asking about the probability that the last digit in a weight measurement, rounded to one decimal place, is 0. Given that the last digit is equally likely to be any digits from 0 through 9, this is a basic probability problem with each outcome being equally likely.

Since there are 10 possible results (the digits 0 through 9), and we are interested in only 1 of these results (the digit 0), the probability can be calculated as 1 divided by 10. Therefore, the probability that the last digit is 0 is 0.1 or 10%.

This is a standard concept in an introductory probability course and is a fundamental idea that will be used in more complex probability problems.

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Two hikers are 33 miles apart and walking towards each other. They meet in 10 hours. Find the rate of each Hiker if one joker walks 1.1 mph fast than the other

Answers

Answer:

Step-by-step explanation:

Let x represent the rate of the first hiker.

if one hiker walks 1.1 mph fast than the other, it means that the rate of the second hiker would be x + 1.1

Two hikers are 33 miles apart and walking towards each other. They meet in 10 hours. This means that in 10 hours, both hikers travelled a total distance of 33 miles.

Distance = speed × time

Distance covered by the first hiker in 10 hours would be

x × 10 = 10x

Distance covered by the second hiker in 10 hours would be

10(x + 1.1) = 10x + 11

Since the total distance covered by both hikers is 33 miles, then

10x + 10x + 11 = 33

20x + 11 = 33

20x = 33 - 11 = 22

x = 22/20 = 1.1 miles per hour

The rate of the second hiker would be

1.1 + 1.1 = 2.2 miles per hour.

SHOW YOUR WORK!! Identify the simplest polynomial function having integer coefficients with the given zeros: 3i, −1, 2

Answers

Answer:

[tex]p(x)=x^4-x^3+7x^2-9x-18[/tex]

Step-by-step explanation:

The given polynomial has roots 3i, −1, 2

Since [tex]3i[/tex] is a root [tex]-3i[/tex] is also a root.

The factored form of this polynomial is [tex]P(x)=(x-3i)(x+3i)(x+1)(x-2)[/tex]

We need to expand to get:

[tex]p(x)=(x^2-(3i)^2)(x^2-x-2)[/tex]

This becomes [tex]p(x)=(x^2+9)(x^2-x-2)[/tex]

We expand further  to get:

[tex]p(x)=x^4-x^3+7x^2-9x-18[/tex]

The polynomial function is [tex]p (x) = x^4 - x^3 + 7x ^2 - 9x - 18[/tex]

The calculation is as follows;

The factored form of the given polynomial should be

[tex]P(x) = (x - 3i) (x + 3i) (x + 1) (x - 2)[/tex]

Now we have to expand it

[tex]p(x) = (x^2 - (3i)^2) (x^2 - x - 2)\\\\= (x^2 + 9) (x^2 - x - 2)[/tex]

[tex]p (x) = x^4 - x^3 + 7x ^2 - 9x - 18[/tex]

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Follow the steps above, and find c, the total of the payments related to financing, and the monthly payment. A customer buys an automobile from you, the salesman. The price of the car, which includes taxes and license, amounts to $5,955.00. The customer wants to finance the car over 48 months after making a $500 down payment. You inform him that the true annual interest rate is 18%.

Answers

the monthly payment is approximately $163.06 and the total payments related to financing are approximately $7834.88.

To find the monthly payment and the total payments related to financing, we need to follow these steps:

1. Calculate the total amount financed.

2. Use the total amount financed to calculate the monthly payment using the formula for monthly payments on a fixed-rate loan.

3. Multiply the monthly payment by the number of months to find the total payments related to financing.

Given:

- Price of the car = $5955.00

- Down payment = $500.00

- Finance period = 48 months

- Annual interest rate [tex]\(= 18\%\)[/tex]

Step 1: Calculate the total amount financed.

The total amount financed is the difference between the price of the car and the down payment.

[tex]\[ \text{Total amount financed} = \text{Price of the car} - \text{Down payment} \][/tex]

[tex]\[ \text{Total amount financed} = \$5955.00 - \$500.00 \][/tex]

[tex]\[ \text{Total amount financed} = \$5455.00 \][/tex]

Step 2: Calculate the monthly payment.

To calculate the monthly payment, we use the formula for the monthly payment on a fixed-rate loan:

[tex]\[ M = \frac{P \times r \times (1 + r)^n}{(1 + r)^n - 1} \][/tex]

Where:

- M is the monthly payment

- P is the principal amount (total amount financed)

- r is the monthly interest rate (annual interest rate divided by 12)

- n is the number of payments (finance period in months)

First, we need to convert the annual interest rate to a monthly interest rate:

[tex]\[ r = \frac{18\%}{12} = 0.18 \times \frac{1}{12} = 0.015 \][/tex]

Now, we plug in the values:

[tex]\[ M = \frac{5455 \times 0.015 \times (1 + 0.015)^{48}}{(1 + 0.015)^{48} - 1} \][/tex]

[tex]\[ M ≈ \frac{5455 \times 0.015 \times (1.015)^{48}}{(1.015)^{48} - 1} \][/tex]

Using a calculator, we find that the monthly payment M is approximately $163.06.

Step 3: Calculate the total payments related to financing.

[tex]\[ \text{Total payments} = \text{Monthly payment} \times \text{Number of months} \][/tex]

[tex]\[ \text{Total payments} = \$163.06 \times 48 \][/tex]

[tex]\[ \text{Total payments} ≈ \$7834.88 \][/tex]

So, the monthly payment is approximately $163.06 and the total payments related to financing are approximately $7834.88.

Chen has 17CDs. She gives 2 to her brother and buys 4 more. Her brother gives her 1 and she gives 3 to her best friend. How many CDs does Chen have now?

Answers

Answer: she has 17 CDs now.

Step-by-step explanation:

The total number of CDs that Chen had initially is 17.

She gives 2 to her brother. This means that she would be having

17 - 2 = 15

She buys 4 more. It means that she would be having

15 + 4 = 19

Her brother gives her 1. So the number that she has is

19 + 1 = 20

she gives 3 to her best friend. Therefore, the number of CDs that Chen has now is

20 - 3 = 17

Evan cut a triangular piece of cloth to use in a quilt. The perimeter of the cloth is 934 cm. The base of the triangular cloth is 214cm. The remaining two sides are the same length.Choose Yes or No to tell if each expression models how to find the length of the other two sides of Evan's cloth.934−2s=214 114+2s=934 2s=934−214 2s−214=934

Answers

Answer:

934−2s=214;  Yes

114+2s=934; No

2s=934−214; Yes

2s−214=934; No

Step-by-step explanation:

The base of the triangular cloth is 214cm. The remaining two sides are the same length.

Let s be the length of other sides.

Perimeter = Sum of all sides of a triangle.

[tex]Perimeter = s+s+214[/tex]

[tex]Perimeter =2s+214[/tex]

It is given that the perimeter of the triangular cloth is 934 cm.

[tex]2s+214=934[/tex]        .... (1)

Equation (1) can be rewritten as

[tex]2s=934-214[/tex]           and [tex]214=934-2s[/tex]

On solving we get

[tex]2s=720[/tex]

Divide both sides by 2.

[tex]s=360[/tex]

Therefore, the length of the other two sides of Evan's cloth is 360 cm.

the sum of three consecutive number is 114. what is the smallest of the three numbers?

Answers

Answer:

37

Step-by-step explanation:

37+38+39

Answer: the smallest of the three numbers is 37

Step-by-step explanation:

Let x represent the smallest number.

Since the three numbers are consecutive, it means that the next number would be x + 1

Also, the last and also the largest number would be x + 2

If the sum of the three consecutive numbers is 114, it means that

x + x + 1 + x + 2 = 114

3x + 3 = 114

Subtracting 3 from the Left hand side and the right hand side of the equation, it becomes

3x + 3 - 3 = 114 - 3

3x = 111

Dividing the Left hand side and the right hand side of the equation by 3, it becomes

3x/3 = 111/3

x = 37

At a corner gas​ station, the revenue R varies directly with the number g of gallons of gasoline sold. If the revenue is ​$56.40 when the number of gallons sold is 12​, find a linear equation that relates revenue R to the number g of gallons of gasoline. Then find the revenue R when the number of gallons of gasoline sold is 7.5.

Answers

Answer:

(i) R = 4.70g

(ii) R = $35.25

Step-by-step explanation:

(i) R ∞ g

Removing the proportionality symbol, we have

R = kg, where k is the constant of proportion

56.40 = k(12)

Divide both sides by 12

56.40/12 = k(12)/12

$4.70 = k

k = $4.70

So, R = 4.70g (which is the linear equation relating Revenue, R to number of gallons, g)

(ii) When g = 7.5,

R = 4.70 * 7.5 = 35.25

R = $35.25

Final answer:

The revenue R at a gas station varies directly with the number of gallons of gasoline sold g. The linear equation relating R to g is R = 4.7g. The revenue when the number of gallons sold is 7.5 is $35.25.

Explanation:

In this particular scenario, we're dealing with a problem of direct variation. In a direct variation, as one quantity increases, the other increases proportionally. This can be represented by a linear equation of the form y = kx, where y is the dependent variable, x is the independent variable, and k is the constant of variation (the ratio of y to x).

Here, the Revenue (R) varies directly with the number of gallons of gasoline sold (g). We can calculate the constant of variation (k) by dividing the given Revenue (R) by the given number of gallons (g): k = 56.4 ÷ 12 = 4.7. So, the linear equation relating R to g is: R = 4.7g.

To find the revenue R when the number of gallons of gasoline sold is 7.5, substitute g = 7.5 into the equation: R = 4.7 * 7.5 = $35.25

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What is the slope intercept form of the equation y+18=2(x-1)

Answers

The slope intercept form of the given equation is: y  = 2x +  ( - 20)  

Step-by-step explanation:

Given,

The equation y + 18 = 2( x - 1)

To write the given equation in the slope intercept form = ?

The equation y + 18 = 2( x - 1)

⇒ y + 18 = 2x - 2

⇒ y  = 2x - 2 - 18

⇒ y  = 2x - 20

⇒ y  = 2x +  ( - 20)                  ..... (1)

We know that,

The equation of slope intercept form,

y = mx + c

Where, m is the sope and c is the y-intercept

∴ The slope intercept form of the given equation is: y  = 2x +  ( - 20)        

A theatre sold a total of 98 adult and senior tickets. Adult tickets sold for 12$ each and senior tickets sold for 8$ each bringing in a total of 1,072$. How many adult tickets were sold

Answers

Answer: 72 adult tickets were sold.

Step-by-step explanation:

Let x represent the number of adult tickets that were sold.

Let y represent the number of senior tickets that were sold.

A theatre sold a total of 98 adult and senior tickets. It means that

x + y = 98

x = 98 - y - - - - - - - - - - - - -1

Adult tickets sold for 12$ each and senior tickets sold for 8$ each bringing in a total of 1,072$. This means that

12x + 8y = 1072 - - - - - - - - - - - 2

Substituting equation 1 into equation 2, it becomes

12(98 - y) + 8y = 1072

1176 - 12y + 8y = 1072

- 12y + 8y = 1072 - 1176

- 4y = - 104

y = - 104/ - 4

y = 26

Substituting y = 26 into equation 1, it becomes

x = 98 - 26 = 72

Factor the expression. x2 – x – 42 (x – 7)(x – 6) (x – 7)(x + 6) (x + 7)(x – 6) (x + 7)(x + 6)

Answers

Answer:

(x - 7)x + 6).

Step-by-step explanation:

x^2 – x – 42

6 * -7 = 42 and  6 - 7 = -1 so the factors are:

(x - 7)x + 6).

The factor form of the expression  x² - x - 42 is (x - 7)(x + 6).

To factor the expression x² - x - 42, we need to find two binomial factors that, when multiplied together, give us the original expression.

We can start by looking for two numbers that multiply to -42 and add up to -1, which is the coefficient of the x term in the expression.

The pair of numbers that satisfy these conditions are -7 and 6.

If we multiply these two numbers, we get -42, and if we add them, we get -1.

Therefore, we can write the expression as:

x² - x - 42

= (x - 7)(x + 6)

This means that the original expression can be factored as the product of two binomials: (x - 7) and (x + 6).

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A concrete mixer is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. How many cubic feet of each ingredient are needed to make 54cu ft of concrete?

Answers

Answer:

Step-by-step explanation:

The total volume of cement in cubic feet to be made is 54 cu ft.

A concrete mixer is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. This means that the ratio of the ingredients is

1 : 2 : 2 : 3

Total ratio = 1 + 2 + 2 + 3 = 8

Therefore,

Volume of cement needed would be

1/8 × 54 = 6.75 cubic feet

Volume of water needed would be

2/8 × 54 = 13.5 cubic feet

Volume of aggregate needed would be

2/8 × 54 = 13.5 cubic feet

Volume of sand needed would be

3/8 × 54 = 20.25 cubic feet

As a secondary mathematics teacher, Hernandez conducted a study that explored whether giving children recess prior to testing helped their test performance. For one of the semesters, he sends half of his classes out for 10 minutes of recess prior to testing for the other half, he provides 10 minutes of free time after the test. Which of the following best represents the design of Hernandez's study?

Answers

Full Question

As a secondary mathematics teacher, Hernandez conducted a study that explored whether giving children recess prior to testing helped their test performance. For one of the semesters, he sends half of his classes out for 10 minutes of recess prior to testing for the other half, he provides 10 minutes of free time after the test. Which of the following best represents the design of Hernandez's study?

a. One-shot case study

b. Post-test only control group

c. Solomon four group

d. Static-group comparison

Answer:

Static-Group Comparison

Explanation:

A Static-Group Comparison describes a study that involves two non-randomly selected groups, where one groups receive the treatment, and the other does not before the test. Afterwards, a post-test examination of the score is then carried out to examine the different in performance between both groups.

Jill found a new fruit punch recipe that calls for orange juice and lemon-lime soda. If orange juice costs $3.60 per bottle and lemon-lime soda costs $1.80 per bottle and the recipe calls for 3 times as many bottles of lemon-lime soda as orange juice, at most how many bottles of orange juice can she buy if she only has $54.00?

Answers

Answer:

She can buy at most 6 bottles of orange juice.

Step-by-step explanation:

Consider the provided information.

The recipe calls for 3 times as many bottles of lemon-lime soda as orange juice,

Let she buy x bottles of orange juice.

According to question: Lemon lime soda = 3x

Orange juice costs $3.60 per bottle and lemon-lime soda costs $1.80 per bottle. She only has $54.00

[tex]3.60x+1.80(3x)=54[/tex]

[tex]3.60x+5.4x=54[/tex]

[tex]9x=54[/tex]

[tex]x=6[/tex]

Hence, she can buy at most 6 bottles of orange juice.

Final answer:

Jill can buy at most 6 bottles of orange juice.

Explanation:

To find out how many bottles of orange juice Jill can buy, we need to determine the cost of the orange juice and the cost of the lemon-lime soda based on the given prices. Let's assume she can buy 'x' bottles of orange juice. Since the recipe calls for 3 times as many bottles of lemon-lime soda, she can buy 3x bottles of lemon-lime soda. The total cost of the orange juice and the lemon-lime soda must not exceed $54.00.

The cost of the orange juice is $3.60 per bottle, so the cost of 'x' bottles of orange juice is 3.60x dollars. The cost of the lemon-lime soda is $1.80 per bottle, so the cost of 3x bottles of lemon-lime soda is 1.80 * 3x = 5.40x dollars.

To find the maximum number of bottles of orange juice she can buy, we need to solve the inequality:

3.60x + 5.40x ≤ 54.00

Combining like terms, we have:

9.00x ≤ 54.00

Dividing both sides of the inequality by 9.00, we get:

x ≤ 6

Jill can buy at most 6 bottles of orange juice.

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Rewrite as a combination of multiple logarithms:

log_8 (10xy^3)

Answers

Answer:

The answer to your question is letter B.   log₈10 + log₈x + 3log₈y

Step-by-step explanation:

Just remember the properties of logarithms

- The logarithm of a product is the sum of logarithms.

- The logarithm of a power is equal to the power times the log.

Then

                 log₈(10xy³)  =  log₈ 10 + log₈x + log₈y³

and finally

                                        log₈10 + log₈x + 3log₈y

For the staff breakfast on Friday Mr. Taylor purchased 5 cartons of eggs (a carton contains a dozen eggs). Je used 2 and 11/12 cartons for scrambled eggs and 1 and 1 and a 3rd cartons for breakfast burritos. How many eggs did he have left?

Answers

Answer: he has 9 eggs left.

Step-by-step explanation:

Mr. Taylor purchased 5 cartons of eggs and a carton contains a dozen eggs. A dozen of eggs is 12 eggs. It means that 5 cartons of eggs would contain

5 × 12 = 60 eggs

He used 2 and 11/12 cartons for scrambled eggs. Converting 2 11/12 into improper fraction, it becomes

35/12 cartons .

He used 1 and 1 and a 3rd cartons for breakfast burritos. Converting

1 1/3 into improper fraction, it becomes 4/3 cartons

Total number of cartons that he used would be

35/12 + 4/3 = (35 + 16)/12 = 51/12

The number of cartons left would be

5 - 51/12 = (60 - 51)/12 = 9/12

Since a carton has 12 eggs,

9/12 carton will have 9/12 × 12 = 9 eggs

The first four terms of an arithmetic sequence are given.

27, 32, 37, 42, ...

What is the 60th term of the sequence?

Answers

Answer:

[tex]a_6_0=322[/tex]

Step-by-step explanation:

we know that

The rule to calculate the an term in an arithmetic sequence is

[tex]a_n=a_1+d(n-1)[/tex]

where

d is the common difference

a_1 is the first term

we have that

[tex]a_1=27\\a_2=32\\a_3=37\\a_4=42[/tex]

[tex]a_2-a_1=32-27=5[/tex]

[tex]a_3-a_2=37-32=5[/tex]

so

The common difference is d=5

[tex]a_4-a_3=42-37=5[/tex]

Find  60th term of the sequence

[tex]a_n=a_1+d(n-1)[/tex]

we have

[tex]a_1=27\\d=5\\n=60[/tex]

substitute

[tex]a_6_0=27+5(60-1)[/tex]

[tex]a_6_0=27+5(59)[/tex]

[tex]a_6_0=322[/tex]

The 60th term of the sequence should be 322 when the first four terms should be given.

Calculation of the 60th term of the sequence:

Since

a1 = 27

a2 = 32

a3 = 37

And, a4 = 42

So,

= 27 + 5(60 - 1)

= 27 + 5(59)

= 322

hence, The 60th term of the sequence should be 322 when the first four terms should be given.

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The expression 0.07x+(x−300) models the final price of a television set with an instant rebate in a state that charges a sales tax. The sales tax is on the original price.
Which expression represents the price of the television set after the instant rebate is applied but before the tax is applied?

Answers

Answer:

(x-300)

Step-by-step explanation:

Function Analysis

The model provided can be broken down into three parts: x is the original price of the television set before any changes were made on it. (x-300) is the price after the instant rebate was applied, and 0.07x is the sales tax (7%) charged by the state. Note this charge is applied on the original price.

Answer: (x-300) is price of the television set after the instant rebate is applied but before the tax is applied.

Barry has 4 wooden identically shaped and sized blocks. 2 are blue, 1 is red and 1 is green. How many distinct ways can barry arrange the 4 blocks in a row? Barry's friend Billie is colour-blind and cannot distinguish between red and green. How many of Barry's distinct arrangements would Billie see different?

Answers

Answer:

Step-by-step explanation:

Distinct ways in which Barry can arrange the wooden shaped blocks is calculated from the permutation expression

4 permutation 3 =

P(n,r)=P(4,3)  =4! ÷ (4−3)! = 24

Billie's distinct ways of seeing the arrangement would be 4 permutation 2

P(n,r)=P(4,2)  =4! ÷ (4−2)! = 12

Answer:

The distinct arrangement Billie would see is P(n,r)=P(4,2)  =4! ÷ (4−2)! = 12

Step-by-step explanation:

From the question, we recall the following:

Blue = 2, red =1 green =1

The way this can be solved for which Barry can arrange the wooden shaped blocks is applying the method called permutation

So,

4 permutation 3 = P(n,r)=P(4,3)  =4! ÷ (4−3)! = 24

The ways Billie's would see  the permutation arrangement  is 4 permutation 2

With the expression given as

P(n,r)=P(4,2)  =4! ÷ (4−2)! = 12

A box of donuts has 12 total. One-fourth of the donuts have sprinkles. Of the remaining donuts, one-third have cherry filling. The rest are plain. How many plain donuts are in the box?

Answers

Answer:

13

Step-by-step explanation:

Trust me

The number of plain donuts in the box will be 6.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that a box of donuts has 12 total. One-fourth of the donuts have sprinkles. Of the remaining donuts, one-third have a cherry filling. The rest are plain.

The number of plain donuts will be calculated as below:-

Number = 12 - ( 12 /4) - ( 9 / 3 )

Number = 12 - 3- 3

Number = 12 - 6

Number = 6 plain donuts

Therefore, the number of plain donuts in the box will be 6.

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a scale drawing of a rectangle is made by using a scale factor of 5/8. the original and the scale drawing are shown below. which method can be used to find the dimensions of the original rectangle

Answers

Answer:

L_original = 28.8 in

H_original = 19.2 in

Step-by-step explanation:

Given:

- Length of scaled rectangle L_scale = 18 in

- width of the scaled rectangle H_scale= 12 in

- Scale factor = (5/8)

Find:

-Which method can be used to find the dimensions of the original rectangle

Solution:

- The best way to determine the original dimensions of the rectangle is by ratios. We have the scale factor as (5/8). so we can express:

                          L_scale = (5/8)*L_original

                          L_original = L_scale*(8/5)

                          L_original = 18*(8/5) = 28.8 in

                          H_scale = (5/8)*H_original

                          H_original = H_scale*(8/5)

                          H_original = 12*(8/5) = 19.2 in

- Hence, the original dimensions are:

                          L_original = 28.8 in

                          H_original = 19.2 in

Answer:

B.   [tex]18 / \frac{5}{8}= 28\frac{4}{5}[/tex] [tex]inches[/tex] [tex]and[/tex] [tex]12 /\frac{5}{8} = 19\frac{1}{5}[/tex] [tex]inches[/tex]

Step-by-step explanation:

Melanie bought bags of colored sand that each cost the same. She spent a total of $24. Find three possible costs per bag and the number of bags that she could have purchased

Answers

Answer:

Step-by-step explanation:

Factors of 24 are 1,2,3,4,6,8,12,24

Since we are looking for prices as well as quantity, these numbers must go in pairs.

1*24 = option 1

2*12 = option 2

3*8 = option 3

4*6 = option 4

Any of the above 4 pairs can suit the figures. They can even be reversed except option 1 ($1 and 24 bags but not $24 and 1 bag because the question says bags not bag).

is 2 - 2 + 5x; 5x equivalent​

Answers

Answer:

Yes

Step-by-step explanation:

The First section of the equation (2-2) cancel each other out and you are left with 5x=5x

Answer:

Yes

Step-by-step explanation:

Because In the equation we have 2-2+5x

2-2=0

So, 0+5x = 5x

The 68-95-99.7 rule tells us how to find the middle 68%, 95% or 99.7% of a normal distribution. suppose we wanted to find numbers a and b so that the middle 80% of a standard normal distribution lies between a and b where a is less than


b. one of the answers below are not true of a and


b. mark the answer that is not true.

Answers

Answer:

The values of a and b are -1.28 and 1.28 respectively.

Step-by-step explanation:

It is provided that the area of the standard normal distribution between a and b is 80%.

Also it is provided that a < b.

Let us suppose that a = -z and b = z.

Then the probability statement is

[tex]P (a<Z<b)=0.80\\P(-z<Z<z)=0.80[/tex]

Simplify the probability statement as follows:

[tex]P(-z<Z<z)=0.80\\P(Z<z)-P(Z<-z)=0.80\\P(Z<z)-[1-P(Z<z)]=0.80\\2P(Z<z)-1=0.80\\P(Z<z) = \frac{1.80}{2}\\P(Z<z) =0.90[/tex]

Use the standard normal distribution table to determine the value of z.

Then the value of z for probability 0.90 is 1.28.

Thus, the value of a and b are:

[tex]a = -z = - 1.28\\b = z = 1.28[/tex]

Thus, [tex]P(-1.28<Z<1.28)=0.80[/tex].

Determine the models that could represent a compound interest account that is growing exponentially.


Select all the correct answers.


A(t) = 2,675(1.003)12t

A(t) = 4,170(1.04)t

A(t) = 3,500(0.997)4t

A(t) = 5,750(1.0024)2t

A(t) = 1,500(0.998)12t

A(t) = 2,950(0.999)t

Answers

Answer:A(t)= 2,675(1.003)12t

A(t)=4170(1.04)t

A(t)=5750(1.0024)2t

Step-by-step explanation:Exponential growth is also called growth percentage.

It is calculated using 100% of the original amount plus the growth rate . Example if the amount grows by 5% yearly.5%=0.05

It is written thus(1+0.005)=1.05.

It is usually written in decimal.

The formular for compound interest that is growing exponentially is written as

A=P (1 + i)^N

Looking at the 5 A(t) equations,only 3 of it are growing exponentially.

To find the equation of a line, we need the slope of the line and a point on the line. Since we are requested to find the equation of the tangent line at the point (4, 2), we know that (4, 2) is a point on the line. So we just need to find its slope. The slope of a tangent line to f(x) at x = a can be found using the formula

Answers

Answer:

[tex]x-4y+4=0[/tex]

[tex]f(x)=\sqrt x[/tex] and x=4

Step-by-step explanation:

We are given that a curve

[tex]y=\sqrt x[/tex]

We have to find the equation of tangent at point (4,2) on the given curve.

Let y=f(x)

Differentiate w.r.t x

[tex]f'(x)=\frac{dy}{dx}=\frac{1}{2\sqrt x}[/tex]

By using the formula [tex]\frac{d(\sqrt x)}{dx}=\frac{1}{2\sqrt x}[/tex]

Substitute x=4

Slope of tangent

[tex]m=f'(x)=\frac{1}{2\sqrt 4}=\frac{1}{2\times 2}=\frac{1}{4}[/tex]

In given question

[tex]m=\lim_{x\rightarrow a}\frac{f(x)-f(a)}{x-a}[/tex]

[tex]\frac{1}{4}=\lim_{x\rightarrow 4}\frac{f(x)-f(4)}{x-4}[/tex]

By comparing we get a=4

Point-slope form

[tex]y-y_1=m(x-x_1)[/tex]

Using the formula

The equation of tangent at point (4,2)

[tex]y-2=\frac{1}{4}(x-4)[/tex]

[tex]4y-8=x-4[/tex]

[tex]x-4y-4+8=0[/tex]

[tex]x-4y+4=0[/tex]

Final answer:

The equation of the tangent line of a function at a particular point can be found by using the formula y - y1 = m(x - x1), where the slope m is the derivative of the function at the specific point. In this case, find the derivative at x = 4 and substitute into the formula along with the point (4,2).

Explanation:

To find the equation of the tangent line of a function at a particular point, we can indeed utilise the slope-point form of a straight line equation, which is y - y1 = m (x - x1). In this case the point on the line is (4,2).

However regarding the slope, it is calculated as the derivative of the function f(x) at the point x = a.

Let us assume the function f(x). The derivative f '(x), also known as the slope of the tangent line at any point x, is found by taking the derivative of f(x). So to find the slope at x = 4, you would calculate f '(4).

Substitute the value of the derivative at the point (4,2) which represents our m(slope), x1=4 and y1=2 into the linear equation y - y1 = m(x - x1) to generate the equation of the tangent line.

Learn more about Equation of Tangent Line here:

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Melanie is baking breakfast rolls for a band camp fundraiser. She bakes 15 dozen breakfast rolls in 3 hours. After 8 hours, she has baked 40 dozen breakfast rolls. At what rate does Melanie bake breakfast rolls each hour?

Answers

Answer:

She bakes rolls at a rate of 60 rolls per hour!

Answer: The rate is 60 per hour

Step-by-step explanation:

You are adding an addition to your patio. The area ( in square feet) of the addition can be represented by k² - 3k - 10.
a) The area of the patio before the addition was 50 square feet. Find it.
b) Find the area of the addition and the area of the entire patio after the addition.

Answers

Answer:

[tex]k^{2}-3k+40[/tex]

Step-by-step explanation:

We suppose;

A= area before addition

B= Area of addition [tex]k^{2}-3k-10[/tex]

a) As area of pation before addition is 50 - it means A= 50

b) Area of addition and the area of entire pation after addition = A+B

= 50 + [tex]k^{2}-3k-10[/tex]

=[tex]k^{2}-3k+40[/tex]

Answer:We suppose;

A= area before addition

B= Area of addition

a) As area of pation before addition is 50 - it means A= 50

b) Area of addition and the area of entire pation after addition = A+B

= 50 +

=

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