PLZ HELPPPPPPPPPPPPPPPP

Answer:

B

Step-by-step explanation:

I think this is your full question and hope it is correct.

Which system of equations could be graphed to solve the equation below?

log(2x+1)=3x-2

A. y1=3x, y2=2x

B. y1=log(2x+1), y2=3x-2

C. y1=log2x+1, y2=3x-2

D. y1=log(2x+1+2), y2=3x

My answer:

We know that: log(2x+1)=3x-2  and they are a equation of log and linear so we need to make system of equation.

The left side is: [tex]y_{1}[/tex] => [tex]y_{1} = log( 2x+1)[/tex]

The right side is : [tex]y_{2} = 3x -2[/tex]

The system of equations are:

[tex]\left \{ {{y_{1} =log(3x+1)} \atop {y_{2} =3x -2}} \right.[/tex]

Now we have two new function with x and y.

Answer:

  -5

Step-by-step explanation:

The power rule can be used.

  f(x) = 5x^-1

  f'(x) = 5(-1)x^(-1-1)

  f'(x) = -5x^-2

Then ...

  f'(-1) = -5(-1)^-2

  f'(-1) = -5

_____

The attached graph shows the value of the derivative at x=-1, along with a tangent line having that slope at the point (-1, f(-1)).

Answer:

All numbers greater than or equal to -3.

Step-by-step explanation:

Just took the edge test.

Answer:

yeah. its d

Step-by-step explanation:

edge test 2020

Answer:

[tex]\frac{17}{6}[/tex] or [tex]2\frac{5}{6}[/tex]

Step-by-step explanation:

1.Find the Least Common Denominator (LCD)

 LCD = 6

2.Make the denominators the same as the LCD.

   [tex]2+\frac{1*3}{2*3} + \frac{1*2}{3*2}[/tex]

3.Simplify. Denominators are now the same

   [tex]2+\frac{3}{6} + \frac{2}{6}[/tex]

4. Join the denominators

   [tex]2+\frac{3+2}{6}[/tex]

5.Simplify

   [tex]2\frac{5}{6}[/tex] = [tex]\frac{17}{6}[/tex]

Answer:

1 1/3

Step-by-step explanation:

Given function:

Rewrite:

Find the solution:

Therefore, 2y+x=1 1/3..

Answer:

It is  [tex]11\frac{9}{10}[/tex]  miles far from Chester to Durbin.

Step-by-step explanation:

Given:

Its 10 3/5 miles from Alston to Barton and 12 1/2 miles from Barton to Chester. The distance from Alston to Durbin, via barton and Chester, is 35 miles.

Now, to find the distance from Chester to durbin.

Distance from Alston to Barton = [tex]10\frac{3}{5} =\frac{53}{5} \ miles.[/tex]

Distance from Barton to Chester = [tex]12\frac{1}{2}\ miles =\frac{25}{2} \ miles.[/tex]

As, given the distance from Alston to Durbin, via barton and Chester, is 35 miles.

Thus, the total distance = 35 miles.

So, we add the distance of Alston to Barton and Barton to Chester and get the distance from Alston to Chester:

[tex]\frac{53}{5} +\frac{25}{2}[/tex]

[tex]=\frac{106+125}{10}[/tex]

[tex]=\frac{231}{10} \ miles.[/tex]

Distance from Alston to Chester  [tex]=\frac{231}{10} \ miles.[/tex]

Now, to get the distance from Chester to durbin we subtract distance from Alston to Chester from the total distance:

[tex]35-\frac{231}{10} \\\\=\frac{350-231}{10} \\\\=\frac{119}{10} \\\\=11\frac{9}{10}\ miles.[/tex]

Therefore, it is  [tex]11\frac{9}{10}[/tex]  miles far from Chester to Durbin.

[tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{48} - \sqrt{54}[/tex] simplified as [tex]11\sqrt{3}- 7\sqrt{6}[/tex] or [tex]1.909[/tex] .

Step-by-step explanation:

We need to Simplify seven square root of three end root minus four square root of six end root plus square root of forty eight end root minus square root of fifty four. Which is equivalent to [tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{48} - \sqrt{54}[/tex] :

[tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{48} - \sqrt{54}[/tex]

⇒ [tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{48} - \sqrt{44}[/tex]

⇒ [tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{16(3)} - \sqrt{9(6)}[/tex]

⇒ [tex]7\sqrt{3}- 4\sqrt{6} + 4\sqrt{(3)} - 3\sqrt{(6)}[/tex]

⇒ [tex]11\sqrt{3}- 4\sqrt{6}- 3\sqrt{(6)}[/tex]

⇒ [tex]11\sqrt{3}- 7\sqrt{6}[/tex]

[tex]\sqrt{3} = 1.732 , \sqrt{6} = 2.449[/tex]

⇒ [tex]11(1.723)- 7(2.449)[/tex]

⇒ [tex]1.909[/tex]

Therefore, [tex]7\sqrt{3}- 4\sqrt{6} + \sqrt{48} - \sqrt{54}[/tex] simplified as [tex]11\sqrt{3}- 7\sqrt{6}[/tex] or [tex]1.909[/tex] .

Answer:

11√3 - 7√6

Step-by-step explanation:

I took the test and got it right.

We are given a velocity equation, and from that, we want to find the initial velocity such that we know the velocity for a given time.

We will see that the initial velocity is 124 ft/s

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

Let's see how to solve this:

We have that the velocity equation:

v(t) = v₀ - (32 ft/s^2)*t

Where I added the units of the gravitational acceleration, which are in ft over seconds squared.

We want to get the value of the initial velocity, v₀, given that after 3 seconds the velocity is 28ft/s.

This means that:

v(3s) = 28 ft/s = v₀ - (32 ft/s^2)*3s

We can solve this for v₀:

28 ft/s = v₀ - (32 ft/s^2)*3s

28 ft/s + (32 ft/s^2)*3s = v₀

124 ft/s = v₀

So we can see that the initial velocity is 124 ft/s

If you want to learn more, you can read:

https://brainly.com/question/9163788

This is a very simple and easy problem. I'm not sure why you need someone else to solve it, but I hope this helps

a. Linear equation:

Let x be amount of movies rented

$8 + ($2.50 * x)

b.

$8 + ($2.50 * 10)

= $8 + $25.0

= $33

Answer:

(i)Ratio of the Number of Girls in the School to the Total Population

=5:27

(ii)Ratio of the Number of Boys in the School to the Total Population=22:27

Step-by-step explanation:

Below is the steps on how the given ratio are derived

If the school has 880 boys and 200 girls

Total Population of the School=880+200=1080

Ratio of Girls to all Student is 5:27

Now, this is derived from this:

Ratio of the Number of Girls in the School to the Total Population

=200:1080[tex]=\frac{200}{1080} =\frac{5}{27}[/tex]

Which in reduced form is 5:27

You can do likewise for boys

Ratio of the Number of Boys in the School to the Total Population=880:1080[tex]=\frac{880}{1080} =\frac{22}{27}[/tex]

Which in reduced form is 22:27

The inequality is:

[tex]n > \frac{m}{4}[/tex]

Membership of the pool will be less expensive until number of visits to the pool is one fourth of the membership amount

Solution:

Given that,

A pool charges $4 each visit or you can buy a membership

Let "n" be the number of times you visit the pool

Let the membership amount of the pool be "m"

A pool charges $4 each visit

Therefore, cost for "n" visit is: $ 4n

The inequality showing that a membership is less expensive than paying each visit to the pool is:

4n > m

Divide both sides by "4"

[tex]n > \frac{m}{4}[/tex]

Therefore, membership of the pool will be less expensive until number of visits to the pool is one fourth of the membership amount

Answer:

Step-by-step explanation:

The coefficient of determination = [tex]r^{2}[/tex] = [tex]0.885^{2}[/tex] = 0.7832

It means about 78% variation in waist size of males can be explained by their weight and about 23% can not be explained.

The horizontal distance the plane has covered is 3940 feet

Explanation:

The plane makes an angle 10° with the ground when it took off from the field.

We need to find the horizontal distance the plane when it has flown 4000 feet.

The length of the hypotenuse is 4000 feet.

Let the horizontal distance be x.

We shall find the value of x using the cosine formula.

The formula is given by

[tex]cos \theta=\frac{adj}{hyp}[/tex]

Substituting the values, we have,

[tex]cos \ 10^{\circ}=\frac{x}{4000}[/tex]

Substituting the value for cos 10°, we get,

[tex]0.985=\frac{x}{4000}[/tex]

Multiplying both sides of the equation by 4000, we get,

[tex]0.985\times 4000=x[/tex]

Simplifying, we get,

[tex]3940=x[/tex]

Thus, the horizontal distance the plane has covered is 3940 feet

Answer:

The range of values for the sample mean is between a lower limit of 19 and an upper limit of 21.

Step-by-step explanation:

sample mean = 20

sd = 10

n = 25

standard error = 1

Lower limit of sample mean = sample mean - standard error = 20 - 1 = 19

Upper limit of sample mean = sample mean + standard error = 20 + 1 = 21

The range of values for the sample mean is between 19 and 21.

Answer: The account balance will be $6596 after 7 years.

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = $4500

r = 5.5% = 5.5/100 = 0.055

n = 4 because it was compounded 4 times in a year.

t = 7 years

Therefore,.

A = 4500(1 + 0.055/4)^4 × 7

A = 4500(1 + 0.01375)^28

A = 4500(1.01375)^28

A = $6596

Answer:

[tex]TA=(144+36\sqrt{3})\ units^2[/tex]

Step-by-step explanation:

we know that

The total area or surface area of the regular pyramid is equal to the area of the triangular base plus the area of its three lateral triangular faces

so

step 1

Find the area of the triangular base B

Is an equilateral triangle

Applying the law of sines

[tex]B=\frac{1}{2}(12^2)sin(60^o)[/tex]

[tex]B=\frac{1}{2}(144)\frac{\sqrt{3}}{2}[/tex]

[tex]B=36\sqrt{3}\ units^2[/tex]

step 2

Find the area of the lateral triangular faces

[tex]A=3[\frac{1}{2}(12)h][/tex]

Find the height

Applying the Pythagorean Theorem

[tex]10^2=6^2+h^2[/tex]

[tex]h^2=100-36\\h^2=64\\h=8\ units[/tex]

Find the area of the lateral triangular faces

[tex]A=3[\frac{1}{2}(12)8]=144\ units^2[/tex]

therefore

The total area is

[tex]TA=(144+36\sqrt{3})\ units^2[/tex]

Answer:

56

Step-by-step explanation:

8C3 = 56

Answer:

15 feet

Step-by-step explanation:

525 = ½(30+40)h

525 = 35h

h = 525/35

h = 15 feet

Answer: she used 6.525 pints of white paint.

Step-by-step explanation:

Kelly uses 8.7 paints of blue paint and white paint to paint her bedroom walls. If 1/4 of this amount is blue paint, it means that the amount of blue paint that she used in painting her bedroom walls is

1/4 × 8.7 = 2.175 pints of blue paint.

Since the rest of the paint is white, it means that the pints of white paint that she used to paint her bedroom walls is

8.7 - 2.175 = 6.525 pints of white paint

Answer:

she uses 6.525 pints of paint

Step-by-step explanation:

Answer:

  9. (x, y) = (6√3, 3)

  10. (x, y) = (14, 14√2)

  11. (x, y) = (2√6, 3√2)

  12. (x, y) = (6, 2)

Step-by-step explanation:

Because you have memorized a short table of trig functions, you know that the ratio of side lengths of a 30°-60°-90° triangle is 1 : √3 : 2, and the ratio of side lengths of a 45°-45°-90° triangle is 1 : 1 : √2.

In each case, we compare the given side ratios to the known ratios for the kind of triangle we have. Then we multiply the triangle ratios by a scale factor that makes the given number match the corresponding ratio value. Matching the other ratio values, we can determine the values of the variables.

__

9. Using the side ratios for the 30-60-90 triangle, you have

  6 : x : y+9 = 1 : √3 : 2

Multiplied by 6, the ratios on the right are ...

  6 : x : y+9 = 6 : 6√3 : 12

  x = 6√3

  y +9 = 12

  y = 3

__

10. Using the side ratios for the 45-45-90 triangle:

  14 : x : y = 1 : 1 : √2

Multiplying the ratios on the right by 14, we have ...

  14 : x : y = 14 : 14 : 14√2

  x = 14

  y = 14√2

__

11. Again using the 30-60-90 ratios:

  √6 : y : x = 1 : √3 : 2

Multiplying the ratios on the right by √6, we have ...

  √6 : y : x = √6 : 3√2 : 2√6

  y = 3√2

  x = 2√6

__

12. Again, using the 45-45-90 ratios:

  x : 3y : 6√2 = 1 : 1 : √2

Multiplying the ratios on the right by 6, we have ...

  x : 3y : 6√2 = 6 : 6 : 6√2

  x = 6

  3y = 6

  y = 2

Answer:3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

khan acadamy hope this helps

Answer:

The answer to your question is 2² 3² or (4)(9)

Step-by-step explanation:

Data

factor 36

Process

1.- Divide 36 by prime numbers starting from 2, then 3, 5, 7, etc.

                          36  2

                           18  2

                            9   3

                            3   3

                             1

2.- Write 36 as a composition of prime numbers

                         36 = 2²3²

3.- The prime factors of 36 are 2² x 3²

Answer:

General Revenue Sales Tax

Step-by-step explanation:

The ¼ percent would be recorded as general revenue sales tax in government activities journal.

This is because the revenue from the tax are categorised as the revenues generated from payrolls (which are imposed on employers), income and profits taxes, social security contributions, taxes levied on goods and services.

Options:

Program Revenue-Culture and Recreation-Sales Tax.

Program Revenue-Culture and Recreation-Operating Grants and Contributions.

General Revenue-Sales Tax.

General Revenue-Culture and Recreation-Sales Tax.

Answer:

General Revenue - Sales Tax

Step-by-step explanation:

General revenue is the income that is generated by the state which may be used to serve any administrative purpose by the state, and tax revenue is the income that is generated by the state through taxation.

Since the sales tax is a way of generating income by the state, it should be recorded as sales tax under general revenue.

Final answer:

The question asks to demonstrate that for a nonnegative integer-valued random variable X, the expected value E(X) equals the summation over all k of the probability P(X ≥ k). This is shown by expressing P(X ≥ k) as an infinite sum, switching the order of summation, and counting each probability P(X = i) exactly i times.

Explanation:

The student's question pertains to the calculation of the expected value (E(X)) of a nonnegative integer-valued random variable. Specifically, the question asks to show that for such a random variable X, the expected value can be expressed as E(X) = ∑₋∞ k=1 P(X ≥ k). To demonstrate this, we begin with the definition of expected value:

E(X) = μ = ∑ xP(x).

Next, we unpack P(X ≥ k) by writing it as an infinite sum of probabilities for all integers i starting from k:

P(X ≥ k) = ∑₋∞ i=k P(X = i).

To find the expected value, we consider the sum of all such probabilities over all k:

∑₋∞ k=1 P(X ≥ k) = ∑₋∞ k=1 ∑₋∞ i=k P(X = i).

We then switch the order of summation, so that we first sum over all possible values of i and then for each i, we sum over the corresponding k that contributes to P(X = i):

E(X) = ∑₋∞ i=1 P(X = i) ∑₉ i k=1.

By doing this, we count each P(X = i) exactly i times, which leads us to the initial definition of expected value, thus proving the given formula.

Answer:

(D) 0.006

Step-by-step explanation:

Total number of cards :52

Please note that, all cards have a the possibility of appearing 4 times.

Hence total possible number of a '2' is 4 cards and so it is also for a '10'

Having this Understanding, let's solve the question properly.

The probability that the FIRST CARD is 2 = 4/52

Probability that the second card without replacement is a 10 = 4 / 51

P( 1st two and 2nd four)

4/52 * 4/51 = 4/663

= 0.0060332

Rounding to 3 decimal places = 0.006

Answer:

[tex]vXw =-36i+33j+26k[/tex]

Step-by-step explanation:

v = 3i + 8j – 6k

w = –4i – 2j – 3k

The cross product

[tex]v X w=\left|\begin{array}{ccc}i&j&k\\3&8&-6\\-4&-2&-3\end{array}\right|[/tex]

[tex]=i\left|\begin{array}{cc}8&-6\\-2&-3\end{array}\right|-j\left|\begin{array}{cc}3&-6\\-4&-3\end{array}\right|+k\left|\begin{array}{cc}3&8\\-4&-2\end{array}\right|\\[/tex]

[tex]=i(-24-12)-j(-9-24)+k(-6+32)\\vXw =-36i+33j+26k[/tex]

The solution to the equation x + 3 = -(x + 1) is x = -2, which is not listed among the provided options. There may be an error in the question or provided options.

To find the value of x that satisfies the equation x + 3 = -(x + 1), we need to solve for x.

First, expand the right side of the equation: x + 3 = -x - 1. Then, add x to both sides of the equation to get 2x + 3 = -1. Finally, subtract 3 from both sides to obtain 2x = -4. Dividing both sides by 2 yields x = -2.

Upon examining the options provided, none of them match our solution. Therefore, there must be a mistake in the provided options or in the question as posed, because our correct solution is x = -2. This means the correct answer is not listed among the options a. x = 8, b. x = 8/3, c. x = -8/3, or d. x = -8.

Answer:

y=\frac{1}{8}x+4

Step-by-step explanation:

first, we can quickly get rid of options 1 and 2, since the y-intercept is not -4, but +4.

this leaves us with options 3 and 4.

we can rule out option3, since the slope is not 4, but 1/8.

hope this helps :)

For this case we must factor the following expression:

[tex]100k ^ 3-75k ^ 2 + 120k-90[/tex]

We take common factor 5:

[tex]5 (20k ^ 3-15k ^ 2 + 24k-18) =[/tex]

We have two groups within the parentheses:

Group 1: [tex]20k ^ 3-15k ^ 2[/tex]

Group 2: [tex]24k-18[/tex]

We factor each group:

Group 1: [tex]6 (4k-3)[/tex]

Group 2: [tex]5k ^ 2 (4k-3)[/tex]

Rewriting we have:

[tex]5 (5k ^ 2 (4k-3) +6 (4k-3)) =\\5 ((5k ^ 2 + 6) (4k-3))[/tex]

Answer:

[tex]5 (5k ^ 2 + 6) (4k-3)[/tex]

Answer: The system of inequalities that models this situation are

p + b ≤ 30

12.5p + 9.5b ≥ 300

Step-by-step explanation:

Let p represent the number of hours he works at the pizzeria.

Let b represent the number of hours he works at the bookstore.

He cannot work more than 30 hours per week in order to attend classes. This means that

p + b ≤ 30

Marcus is working at a local pizzeria where he makes $12.50 per hour and is also working at the university bookstore where he makes $9.50 per hour. He must make at least $300 per week to cover his expenses. This means that

12.5p + 9.5b ≥ 300