ifyou choose one without​ looking, the probability you choose a green marble is StartFraction 20 Over 40 EndFraction
. How can you write this probability as a​ decimal? Write this probability as a decimal. Use a word or phrase to describe this probability.
How do you change the fraction to a​ decimal?
A.
Multiply the numerator and denominator by 3.
B.
Divide the numerator by the denominator.
C.
Divide the denominator by the numerator.
D.
Multiply the numerator by the denominator.

20 % are the math apps in total number of apps

Solution:

Maya downloaded some math and science apps from Google Play

The number of math apps is 25% of the number of science apps

Let "x" be the number of science apps

Then, we get,

Number of math apps = 25 % of number of science apps

Number of math apps = 25 % of x

[tex]\text{Number of math apps } = \frac{25}{100} \times x[/tex]

Number of math apps = 0.25x

What percent are the math apps to the total number of apps?

Total number of apps = x + 0.25x = 1.25x

Math apps = 0.25x

We have to find the percent of math apps in total number of apps

[tex]\text{ percent of math apps} = \frac{\text{Math app}}{\text{total number of apps}} \times 100[/tex]

[tex]\text{ percent of math apps} = \frac{0.25x}{1.25x} \times 100\\\\\text{ percent of math apps} = 0.2 \times 100\\\\\text{ percent of math apps} = 20[/tex]

Thus 20 % are the math apps in total number of apps

75% right?

I think so..

Answer:

They need $2655 to raise to cover the costs of the printing and meet their goal.

Step-by-step explanation:

Consider the provided information.

As a fundraiser it cost them $155 to print the tickets and they would like to make at least a $2500 profit

Let x (in dollar) represents the fund raised.

The money spent on printing ticket is $155.

The profit they would like to make at least is $2500.

Therefore, the required inequality is:

[tex]x-155\geq 2500[/tex]

Simplify the inequality.

[tex]x\geq 2500+155\\x\geq 2655[/tex]

Therefore, they need $2655 to raise to cover the costs of the printing and meet their goal.

Answer:

The answer is D

Step-by-step explanation:

Answer:

D. $9x + $32 < $122

Step-by-step explanation:

given :

x is the number of visits

$9 is the cost per visit

$32 is the monthly dues

the amount she pays each month

= monthly dues + (cost per visit x number of visits)

= 32+ 9x  (rearrange)

= 9x + 32

given that she does not wish to spend more than $122, that means she wants to spend LESS than $122, i.e

amount spent < $122

or

9x + 32 < 122   (answer D)

Multiply the amount raised by 280%

Rewrite 280% as a decimal by moving the decimal point 2 places to the left

280%. = 2.80

400 x 2.80 = $1120.00

Answers are:

The answer will be greater than $400 because 280 is greater than 100.

(100)(4) = 400, so (280)(4) = the amount of money the carnival raised on Friday.

The carnival raised $1,120 on Friday.

Answer:

B,C,F

Step-by-step explanation:

YOU WELCOMEEEEEEEEEEEEEEE :)

Answer:

C

Step-by-step explanation:

Answer:

40%

Step-by-step explanation:

Percent is how much out of 100.

We have 2/5, so find equivalent fractions:

2/5 = 4/10 = 40/100

2/5 = 40%

They will be 18 km apart at 5 pm.

Step-by-step explanation:

Speed of Raj is 5km/hr and speed of Dev is 7km/hr

Since they are going in opposite direction,

So, every 1 hours there difference will be (7 + 5) km = 12 km

Now, they will be apart 18 km distance 18/12 hours = 1 hour 30 min

The time will be 3:30 PM + 1 hour 30 min = 5 :00 PM

Answer:

x= -1

Step-by-step explanation:

ditribute 3 to the (2-2x), 15+3x=6-6x

add 6x to both sides 15+9x=6

subtract 15 from both sides 9x=-9

divide 9 on both sides x= -1

Laura received 144 orders over the first year

Solution:

Given function is:

f(n) = 2n - 1

Where, "n" is the month

In the first month she put up her website she had only a single T-shirt order

f(1) = 2(1) - 1 = 2 - 1

f(1) = 1

There are 12 months in a year

For the second month, and third month and so on, substitute n = 2, 3 and so on

f(2) = 2(2) - 1 = 4 - 1 = 3

f(3) = 2(3) - 1 = 6 - 1 = 5

f(4) = 2(4) - 1 = 8 - 1 = 7

f(5) = 2(5) - 1 = 10 - 1 = 9

f(6) = 2(6) - 1 = 12 - 1 = 11

f(7) = 2(7) - 1 = 14 - 1 = 13

f(8) = 2(8) - 1 = 16 - 1 = 15

f(9) = 2(9) - 1 = 18 - 1 = 17

f(10) = 2(10) - 1 = 20 - 1 = 19

f(11) = 2(11) - 1 = 22 - 1 = 21

f(12) = 2(12) - 1 = 24 - 1 = 23

Thus total orders received over first year:

Total orders = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23

Total orders = 144

Thus she received 144 orders over the first year

Answer:

a = [tex]\frac{v+w}{k}[/tex]

Step-by-step explanation:

Given

ak = v + w ( isolate a by dividing both sides by k )

a = [tex]\frac{v+w}{k}[/tex]

Answer:

I am pretty sure it's −2.7710843373

Answer:

-2.771

Step-by-step explanation:

66*94 = 6,204 / 996=6.228-9 = -2.771

Answer:

175 calories.

Step-by-step explanation:

There are 600 calories with 240 from fat in a 6 inch personal pizza.

If we consider the number of calories in each inch of pizza to be constant.

Then, a 14 inch pizza will have [tex]\frac{600}{6} \times 14 = 1400[/tex] calories.

Now, a standard 14 inch pizza has 8 slices and if the 14 inch pizza is cut into 8 slices then in each slice there will be [tex]\frac{1400}{8} = 175[/tex] calories. (Answer)

The estimated number of calories in one slice of a 14-inch pizza, assuming it is cut into 8 slices, is 408 calories.

In this problem, we need to work with the concept of Ratios and Proportions in order to estimate the amount of calories in one slice of a 14-inch pizza. Firstly, we may want to calculate how many 6-inch pizzas fit into a 14-inch pizza. To do this we can use the formula for the area of a circle (πr²) where the r represents the radius.

For the 6-inch pizza, the radius is 3 inches, and for the 14-inch pizza, the radius is 7 inches. Therefore, according to the formula, we have:

Area of 6-inch pizza: π * 3² = 9π

Area of 14-inch pizza: π * 7² = 49π

By dividing the area of the 14-inch pizza by the area of the 6-inch pizza, we find that around 5.44 of 6-inch pizzas fit into the 14-inch pizza:

49π/9π = 5.44

So, the 14-inch pizza has roughly 5.44 times more calories than the 6-inch pizza, meaning it would have 600 calories * 5.44 = 3264 calories.

If you split the pizza into 8 slices, each slice of pizza would therefore have 3264 calories / 8 slices = 408 calories.

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See the explanation

The complete question is attached below. In order to solve this problem, we'll use a graphing tool. First of all, we'll say that the LHS is a linear function and the RHS is another linear function, so for each case, we'll have:

[tex]f(x)=g(x)[/tex]

For each graph, [tex]f(x)[/tex] will be drawn in red while [tex]g(x)[/tex] will be drawn in blue.

Case 1:

[tex]f(x)=\frac{1}{4}x+\frac{5}{2}x-2 \\ \\ g(x)=4-\frac{1}{4}x[/tex]

So by equating both equations:

[tex]\frac{1}{4}x+\frac{5}{2}x-2=4-\frac{1}{4}x[/tex]

By using graphing tool we get a point of intersection at which the x-value is the solution to our equation. So:

Solution:

[tex]\boxed{x=2}[/tex]

See First Figure below.

Case 2:

[tex]f(x)=7.9x+x+4 \\ \\ g(x)=-1.1x-16[/tex]

Applying a similar method as in case 1.

Solution:

[tex]\boxed{x=-5.8}[/tex]

See Second Figure below.

Case 3:

[tex]f(x)=3.2x+5.7 \\ \\ g(x)=-2.5x[/tex]

Applying a similar method as in case 1.

Solution:

[tex]\boxed{x=-1}[/tex]

See Third Figure below.

Case 4:

[tex]f(x)=10.1x-1.6x+44 \\ \\ g(x)=-7[/tex]

Applying a similar method as in case 1.

Solution:

[tex]\boxed{x=-6}[/tex]

See Fourth Figure below.

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Answer:

Answer: 1. 10.1x - 1.6x + 44 = -7

             2. 7.9x + x + 4 = 1.1x - 16

           3.  3.2x + 5.7 = -2.5x

           4. 1/4x + 5/2x - 2 = 4 -1/4x

in order

Step-by-step explanation:

mark as brainliest plz!!!        hope this helps!

Answer:

x = 1/5

Step-by-step explanation:

To solve, simplify the equation, then isolate "x". Start with the distributive property, where you multiply the number outside the brackets with each number inside the bracket. Isolate "x" by bringing all the other numbers to the right side on the equal sign. When moving a number, do its reverse operation to the whole equation.

-5(x-3) = 14           Distribute. Multiply -5 by "x", subtract -5 times 3.

(-5)x - (-5)3 = 14           Multiply -5 and 3

(-5)x - (-15) = 14           Two negatives make a positive

(-5)x + 15 = 14           Remove brackets around -5

-5x + 15 = 14           Start isolating

-5x + 15 - 15 = 14  - 15          Subtract 15 from both sides

-5x = -1          Left side: 15 cancelled out.  Right side: 14-15 = -1

-5x/-5 = -1/-5          Divide both sides by -5.

x = 1/5         Solved for "x"

Check your answer by substituting "x" with the answer you found:

-5(x - 3) = 14  

-5(([tex]\frac{1}{5}[/tex]) - 3) = 14          Change "x" to 1/5.

-5(([tex]\frac{1}{5}[/tex]) - [tex](\frac{5}{5})(\frac{3}{1})[/tex]) = 14           Make 5 the common denominator

-5([tex]\frac{1}{5}[/tex] - [tex]\frac{15}{5}[/tex]) = 14          Multiply the fractions across

-5([tex]\frac{1-15}{5}[/tex]) = 14        Combined the fractions on top of the same denominator

-5([tex]-\frac{14}{5}[/tex]) = 14          Simplify numerator

[tex]\frac{-5*-14}{5}[/tex] = 14          Multiply by combining into the numerator

[tex]\frac{70}{5}[/tex] = 14          Divide the top by the bottom of the fraction

14 = 14             Same answer on both sides

LS = RS          Left side equals right side

Therefore the answer is correct.

Answer:

h = 2A/b

l = (P/2) - w

Step-by-step explanation:

for equation A

Multiply both sides with 2

Then divide both sides with b which leaves h on one side

for equation P

Divide by 2 on both sides

Then subtract w from both sides which leaves l on one side

Answer:

Step-by-step explanation:

circumference= 2πr

                        = 2*[tex]\frac{22}{7}[/tex]*22

                        = 44*[tex]\frac{22}{7}[/tex]

                       = 968/7

                        = 138.28 cm

Answer:

Circumference of the Tire is  [tex]138.16cm[/tex]

Step-by-step explanation:

Circumference of any figure is the total length of its boundaries.

Considering the tire as a circle.

Given:

         radius of the tire= [tex]22cm[/tex]

    circumference of a circle = [tex]2\pi r[/tex]

                                         [tex]=2*\pi *22\\\\=44*\pi\\\\ =44(3.14)\\\\=138.16cm[/tex]

So, the circumference of the Tire is  [tex]138.16cm[/tex]

Answer:0.000004

or 4.0E-5

Step-by-step explanation:

Answer:

The population reaches 42,336 fish in 2258

Step-by-step explanation:

Given:

[tex]P = 0.62x^2 - 0.043x + 3[/tex]

To Find:

Time taken  to reach 42,336 = ?

Solution:

According to the question  x is the number of years after which the population .

Then

[tex]42336 = 0.62x^2 - 0.043x + 3[/tex]

[tex]0 = 0.62x^2 - 0.043x + 3- 42333[/tex]

[tex]0.62x^2 - 0.043x -42333[/tex] = 0

Solving using quadratic formula

[tex]x =\frac{ -b\pm \sqrt{b^2 -4ac}}{2a}[/tex]

[tex]x =\frac{ -(-0.043)\pm \sqrt{(-0.043) -4(0.62)(42333)}}{2(42333)}[/tex]

[tex]x =\frac{ -(-0.043)\pm \sqrt{(0.001849) -0.10664}}{84666}[/tex]

x=261.337                    x=−261.268

Neglecting the   negative value we get

x = 261.337

x =  261 approx

261 years after  1997  =  2258

To find the year when the population reaches 42,336 fish, solve the quadratic equation P = 42.336 by factoring, completing the square, or the quadratic formula.

To find the year when the population reaches 42,336 fish, we need to solve the equation P = 42.336.

First, rewrite the equation as a quadratic equation: 0.62x^2 - 0.043x + 3 = 42.336.

Then, solve the quadratic equation using factoring, completing the square, or the quadratic formula. The solution will give you the value of x, which represents the number of years since 1997. Add this value to 1997 to find the year when the population will reach 42,336 fish.

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It would take the kitten 25 days after its birth to triple its weight.

Solution:

kitten weighed 100 grams at birth

And gained 8 grams per day

kitten needed to triple its weigh

Which means, they have to become 3 x 100 = 300 grams

Let "x" be the number of days needed to be 300 grams

Then we can say,

300 grams = 100 grams at birth + 8 grams( number of days)

[tex]300 = 100 + 8x\\\\8x = 300-100\\\\8x = 200\\\\Divide\ both\ sides\ by\ 8\\\\x = 25[/tex]

Thus it would take the kitten 25 days after its birth to triple its weight.

Answer:

65°

Step-by-step explanation:

recall that for a triangle, the exterior angle (130 deg in this case) is equal to the sum of its remote interior angles (also see attached)

this means that

130° = y° + y°

or

2y° = 130°

y = 130/2 = 65°

Answer:

I know only number a

Step-by-step explanation:

For number a

x+2=3

When reflecting over y = -x

The x and y values change places and the signs change.

(-2,5) becomes (-5,2)

Answer:

(-5,2)

Step-by-step explanation:

hope this helps

Answer:

0.8

Step-by-step explanation:

-4/4=-1

160%=1.6

1/5=0.2

--------------

-1+1.6+0.2

0.6+0.2

0.8

Answer:

The right answer is A. 37

Step-by-step explanation:

Let's find the value of:

21 + 4(3² - 5)

21 + 4 * (9 - 5)

21 + 4 * (4)

21 + 16 = 37

The right answer is A. 37

Answer:

The cost of one pizza is $8

Step-by-step explanation:

From the question;

We are required to determine the cost of  one Pizza

Then we get the equations;

3x + 4y = $34

3x + 7y = $41.50

We can solve the equations simultaneously;

Subtracting the two equations;

3x + 4y = $34

3x + 7y = $41.50

...........................................

       -3y = -$7.5

           y = $2.5

To get x;  

      3x = $34 - 4($2.5)

       3x = $24

        x = $8

Therefore, the cost of one pizza is $8

Answer:

Distance = 192 km

Step-by-step explanation:

To calculate the distance, the distance is given by the formula:

s = vt

where s = distance

          v = average speed

          t = time taken to travel

therefore, the distance is given as

s = 24miles/hour× 8 hours

  = 192 miles.

The total distance is 192 miles.

To calculate the average speed on the first trip to the conference, divide the distance by the time like this:

s = vt

v = s/t

  = 192 miles/ 5 hours

  = 38.4 miles per hour

As you can see, the driver drove faster than she did when she was driving in bad weather.

Answer:

c ≥ 56   is the REQUIRED INEQUALITY.

Step-by-step explanation:

Here, the given  question is INCOMPLETE.

Xander needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items. Choose the inequality and solution to represent the number of cans, c, that Xander must still collect.

Now, here:

The number of cans Xander needed to collect = At least 120

The number of items already collected =  64

c: the number of cans, c, that Xander must still collect.

Now, the number of cans to be collected  - Cans already collected  

=  120 - 64  = 56

So, the number of can he must collect to make a TOTAL OF AT LEAST 120 cans  =  56 cans

⇒ The number of cans to be collected ≥ 56 cans

⇒c ≥ 56 cans

or, c ≥ 56   is the REQUIRED INEQUALITY.

Answer:

c ≥ 56 is the REQUIRED INEQUALITY.

Step-by-step explanation:

Option A: [tex]2^9[/tex]

Option E: [tex]2^{-2}.2^{11}[/tex]

Option F: [tex](2.2.2.2.2)(2.2.2.2)[/tex]

Solution:

Given expression is [tex]2^5.2^4[/tex].

To find which expression is equivalent to the given expression.

Option A: [tex]2^9[/tex]

Using exponent rule: [tex]a^b.a^c=a^{(b+c)}[/tex]

[tex]2^5.2^4=2^{(5+4)}=2^9[/tex]

Therefore [tex]2^9[/tex] is equivalent to the given expression.

Option B: [tex]2^{20}[/tex]

It is not equivalent to the given expression.

Option C: [tex]2.2^9[/tex]

[tex]2.2^9=2^{(1+9)}=2^{10}[/tex]

Therefore, It is not equivalent to the given expression.

Option D: [tex]2^{10}.2^2[/tex]

[tex]2^{10}.2^2=2^{(10+2)}=2^{12}[/tex]

Therefore, It is not equivalent to the given expression.

Option E: [tex]2^{-2}.2^{11}[/tex]

[tex]2^{-2}.2^{11}=2^{(2-11)}=2^9[/tex]

Therefore, It is equivalent to the given expression.

Option F: [tex](2.2.2.2.2)(2.2.2.2)[/tex]

[tex](2.2.2.2.2)(2.2.2.2)=2^5.2^4[/tex]

Therefore, It is equivalent to the given expression.

Hence option A, Option E and Option E are equivalent to the given expression.

Answer:

AEF

Step-by-step explanation:

Answer:

You should disagree with the student's claim.

The number of revolutions during a five-mile ride is 323.4