All categories

3 years ago

POINTS 20POINTS!!!

Mathematics

2 answers:

mojhsa [17]3 years ago

8 0

Remark

The difference is C_2005 - C_2010

Calculation

C_2005 - C_2010 = (-15x^2 + 20x - 3) - (- 10X^2 + 30x - 2) Remove the brackets

C_2005 - C_2010 = - 15x^2 +20x - 3 + 10^2 - 30x + 2 Look how the signs change in the second set of brackets.

C_2005 - C_2010 = -5x^2 - 10x - 1 Answer

PilotLPTM [1.2K]3 years ago

7 0

Answer:

C_{2010} - C_{2005} = 5 {x}^{2}+ 10x + 1

Step-by-step explanation:

The average cost equation in the year 2005 is:

The average cost equation in the year 2010 is

The difference in average cost equation for cars between 2005 and 2010 is

We regroup the terms to get,

Combine the similar terms to

You might be interested in

Which set of ordered pairs represents a function? {(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)} {(3, –1), (7, 1), (–6, –1), (9, 1

ra1l [238]

A function can't have x repeating any of the same number twice for example the first one (2, -2), (1, 5), (-2, 2), (1,-3), (8,-1) you have two 1's (1,5) and (1,-3) the x is the first number. Now a function can have the same y value. So your answer is (3, -1), (7,1), (-6,-1), (9,1), and (2,-1) you have to have all different x values in order for it to be a function. Hope that helps.

7 0

4 years ago

Read 2 more answers

A line contains the points (-3, 4) and (7, -1). Calculate the equation of the line in the form

ad-work [718]

Answer:

$y=-\frac{1}{2}x+\frac{5}{2}$

Step-by-step explanation:

First we need to find the slope of the line. We can plug in both coordinates in to the slope formula.

The slope formula is:

$m=\frac{y2-y1}{x2-x1}$

So I will use (-3,4) as the first coordinate, and (7,-1) as the second coordinate.

x₁ = -3

y₁ = 4

x₂ = 7

y₂= -1

I will plug in these values to find the slope.

$m=\frac{y2-y1}{x2-x1}\\\\m=\frac{-1-4}{7-(-3)}\\\\m=\frac{-5}{10}\\\\m=-\frac{1}{2}$

Now that we know the slope is -1/2, we can plug in the slope and a point into the point slope equation. Then we can solve for y.

$y-y_{1} =m(x-x_{1} )\\\\y-4==-\frac{1}{2}(x-(-3))\\\\y-4=-\frac{1}{2}x-\frac{3}{2}\\\\ y=-\frac{1}{2}x+\frac{5}{2}$

I have attached an image of what this graph should look like. Since the slope is -1/2, the y value should decrease by 1/2 every time you move over by 1 on the x axis. And since the equation says "+5/2" we know we have to shift the graph up by 5/2. The y-intercept will be 5/2.

I added another image that shows how to graph an equation using the equation y=mx+b

5 0

4 years ago

24x-45y=34x (rp) have a great day

nirvana33 [79]

24x-45y=34x

To solve for y, subtract 24x:
-45y=10x

Divide by -45:
y=-10/45x

Reduce:
y=-2/9x

To solve for x, subtract 24x:
-45y=10x

Divide by 10:
-45/10y=x

Reduce:
-9/2y=x

4 0

3 years ago

Read 2 more answers

Is <img src="https://tex.z-dn.net/?f=2%5E%7B-3%7D" id="TexFormula1" title="2^{-3}" alt="2^{-3}" align="absmiddle" class="latex-f

TEA [102]

Answer:

Rational

Step-by-step explanation:

$2^{-3}$ simplifies to $\frac{1}{8}$ .

Therefore, it is rational.

$2^{-3}\\\\\text {Apply negative exponent rule: } a^{-n} = \frac{1}{a^n} \\2^{-3}= \frac{1}{2^3}\\ \rightarrow 2^3 = 2*2*2=8\\\boxed{2^{-3}=\frac{1}{8}}$

Brainliest Appreciated.

5 0

3 years ago

7. Use the figure to find the approximate perimeter

zheka24 [161]

Answer:

the answer is 62in.

( that is the formula of a parallelogram which is 2(a+b))

3 0

3 years ago