7th grade math help me pleaseeeeee

The function for the value of the motorcycle after x years are;

y = 8000 - 500x

y = -500x + 8000

A function is a relationship between inputs where each input is related to exactly one output.

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have given that new motorcycle has a value of $8,000. Every year its value decreases by $500.

Now, we have y = amount of the motorcycle

x = number of years

The function for the value of the motorcycle after x years.

y = 8000 - 500x

y = -500x + 8000

Thus,

y = 8000 - 500x

y = -500x + 8000

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Answer:

86π

Step-by-step explanation:

A=2πrh+2πr2

A=2π*16+2π*4*7

A=32π+54π

A=86π

Hope this helps :)

Answer:

Equation: y = 8x + 56

After 5 minutes, the volume of the water was 96 gallons

Step-by-step explanation:

Use y = mx + b to create the linear equation, where m is the slope and b is the y intercept.

Since the water flows in at 8 gallons per minute, 8 will be the slope. The variable x will represent the number of minutes.

There are already 56 gallons of water in the tank, so b will be 56.

Plug in these values into the equation:

y = 8x + 56

So, the linear equation is y = 8x + 56

Using this, plug in 5 as x to find the volume of the water in the sink after 5 minutes:

y = 8x + 56

y = 8(5) + 56

y = 40 + 56

y = 96

So, after 5 minutes, the volume of the water was 96 gallons

Answer:

y=-2x+11

Step-by-step explanation:

Brainliest maybe?

Answer:

C

Step-by-step explanation:

The pair of alternate interior angles in the given figure is ∠ 4 and ∠ 6

Alternate Interior Angles are a pair of angles on the inner side of each of those two lines, but on opposite sides of the transversal.

Given is a figure, we are asked to identify a pair of alternate interior angles,

According to the definition of pair of alternate interior angles, we can identify two pair of alternate interior angles, in the figure,

∠ 4 and ∠ 6

∠ 3 and ∠ 5

Hence, the pair of alternate interior angles in the given figure is ∠ 4 and ∠ 6

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Answer:

Use these points.

(1, -2.5)

(-1, -5.5)

3/2x1=1.5-4=-2.5

3/2x-1=-1.5-4=-5.5

Answer:The two points on the graph are (0,-4) and (2.667,0)

Step-by-step explanation:

We are given that a function. We have to graph the function  using line tool and select two points to graph. Let Substitute x=0 then, we get Therefore, the equation cut the y- axis at point (0,-4). Substitute y=0 then we get

Answer:

205

Step-by-step explanation:

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

Answer:

Step-by-step explanation:

Step-by-step explanation:

Let's think about how we can solve for ttt in the following equation:

\qquad 6t = 546t=546, t, equals, 54

We want to get ttt by itself on the left hand side of the equation. So, what can we do to undo multiplying by 6?

We should divide by 6 because the inverse operation of multiplication is division!

Here's how dividing by 6 on each side looks:

\begin{aligned} 6t &= 54 \\\\ \dfrac{6t}{\blueD{6}} &= \dfrac{54}{\blueD{ 6}}~~~~~~~~~~\small\gray{\text{Divide each side by six.}} \\\\ t &= \greenD{9}~~~~~~~~~~\small\gray{\text{Simplify.}} \end{aligned}6t66tt=54=654          Divide each side by six.=9          Simplify.

Let's check our work.

It's always a good idea to check our solution in the original equation to make sure we didn't make any mistakes:

\qquad \begin{aligned} 6t &= 54 \\ 6 \cdot \greenD9 &\stackrel{\large?}{=} 54\\ 54 &= 54 \end{aligned}6t6⋅954=54=?54=54

Yes, t = \greenD{9}t=9t, equals, start color #1fab54, 9, end color #1fab54 is a solution!

Solving a division equation using inverse operations

Now, let's try to solve a slightly different type of equation:

\qquad \dfrac x5 = 75x=7start fraction, x, divided by, 5, end fraction, equals, 7

We want to get xxx by itself on the left hand side of the equation. So, what can we do to cancel out dividing by 5?

We can multiply by 5 because the inverse operation of division is multiplication!

Here's how multiplying by 5 on each side looks:

\begin{aligned} \dfrac x5 &= 7 \\\\ \dfrac x5 \cdot \blueD{5} &= 7 \cdot \blueD{5}~~~~~~~~~~\small\gray{\text{Multiply each side by five.}} \\\\ x &= \greenD{35}~~~~~~~~~~\small\gray{\text{Simplify.}} \end{aligned}5x5x⋅5x=7=7⋅5          Multiply each side by five.=35          Simplify.

Let's check our work.

\qquad \begin{aligned} \dfrac x5 &= 7 \\\\ \dfrac{\greenD{35}}{5} &\stackrel{\large?}{=} 7\\\\ 7 &= 7 \end{aligned}5x5357

Answer:

WHAT THE #### WHAT IS THEIS

Step-by-step explanation:

Answer:

Two times the density of hydrogen   =   18 x 10^-5

Step-by-step explanation: Two times the density of hydrogen   =   18 x 10^-5    is ALMOST 20 x 10^-5    or 2 x 10^-4

SO the first statement is correct.

Answer:

a.

Step-by-step explanation:

imagine a graph that you see, the x-axis has to be positive for it to be on the right side of the y-axis so the value of the y axis can be positive or negative and then you substitute for a positive number, in this case, into the x axis and then you would solve for every answer choice to see if it's right or not if it is accurate.

Answer:

the value of a1 in a geometric series is 12 if i remember correctly.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Since dividing any term by the previous term is constant this is a geometric sequence. In this case the common ratio is 18/6=54/18=3 and the first term a1=6

So a1=6 and r=3

Answer:

$106.50

Step-by-step explanation:

Answer:

Position of the particle is 20.

Step-by-step explanation:

Position function is integration of velocity function.

Velocity function is integration of acceleration function.

So, let's integrate the given a(t) to get v(t)

If we integrate v(t) then we get s(t)

It is given the values of s(0) =0 and s(1)=20

So, position of the particle is difference of 20, 0. That's 20-0 =20.

Answer:

x = 28.9

Step-by-step explanation:

tan = [tex]\frac{opposite}{adjacent}[/tex]

⇒ tan 48 = [tex]\frac{26}{x}[/tex]

(tan of 48 is 1.11)

⇒ 1.11 = [tex]\frac{26}{x}[/tex]

multiply 26 on both sides

⇒ 1.11 x 26 = [tex]\frac{26}{x}[/tex] x 26

⇒ 28.86 = x

round to the nearest tenth

⇒ 28.86 = 28.9

The first one I'll do is Physics because you know the amount of girls and total amount of students. Use the equation x+19=33. Note that x is the amount of boys we are trying to find. All you need to do is simply subtract 19 from both sides to get x alone.

                                             x + 19 = 33

                                                  -19   -19

                                             x         = 14

For the total that's going up and down, you can do this same process again, but just using x for girls instead of boys. Your equation should look like 47+x=80. Once again, subtract 47 from both sides.

                                             47 + x = 80

                                             -47        -47

                                             x         =  33

Now you can find whole row for boys. This equation will be a little longer, but it's still pretty easy. 18+x+14=47 is what we will be using. We first will need to combine like terms (the 18 and 14), then subtract it off from both sides to get x alone.

                                             18 + x + 14 = 47

                                                    x + 32 = 47

                                                        -32   -32

                                                     x         = 15

Moving onto the biology column, we'll be using the equation 15+x=21

                                             15 + x = 21

                                            -15        -15

                                             x         = 6

Now we can find out the girls column with this equation: x+6+19=33

                                           x + 6 + 19 = 33

                                           x + 25      = 33      

                                               -25         -25

                                                     x      = 8

Lastly, we can find the chemistry column by just adding 18+8 to get 26.

I know this was a little hard to follow along, so here's a picture of it finished:  

Answer:

5/19

Step-by-step explanation:

You just divide the nominator and denominator 10/38 by 2

Answer:

19

Step-by-step explanation:

Answer:

Step-by-step explanation:

∠5 + ∠4 = 180°

4x° + 2x° = 180°

6x° = 180°

x = 30

Answer:

H, 96.56

Step-by-step explanation:

First, find the area of the square: 8x8=64

do 17-8-4 to get 5, which is the triangle base

Then, the triangle area: 8x5=40/2=20

Finally, the circular shape area: π·4^2=50.26

divide that by 4 because it's 1/4 of a circle: 12.56

then add all the sums together: 64+20+12.56=96.56

Answer:

The question is not asked correctly

Step-by-step explanation:

Answer:

x = 9.33

Step-by-step explanation:

7/13 = x/(x+8)

7x + 56 = 13x

6x = 56

x = 9.33

Answer: The answer is C

Step-by-step explanation: I had the same question and got it right on my test

Answer:

Check pdf

Step-by-step explanation:

Answer:

once

Step-by-step explanation:

The solution of the subtraction operation is equal to 4.75 .

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS - Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

We need to Subtract 0.25 subtracted from 5

We know that 0.25 x 20 = 5

so, the subtraction is;

5 - 0.25 = 4.75

The answer is 4.75 .

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Answer:

126 km/h

Step-by-step explanation:

Sorry if I'm wrong:/