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Novosadov [1.4K]
1 year ago
10

What is the result when the sun 4x^2+8x-1 and 7x^2-3x+8 is multiplied by 5x^2?

Mathematics
1 answer:
Agata [3.3K]1 year ago
5 0

Answer:

55x^4+25x^3+35x^2

Step-by-step explanation:

5x²(4x^2+8x-1 and 7x^2-3x+8)

Applying distribution property,we have

  • 5x^2(4x^2+8x-1 + 7x^2-3x+8)
  • (5x^2)*(4x^2)+(5x^2)*(8x)+(5x^2)*(-1)+(5x^2)(7x^2)+(5x^2)*(-3x)+(5x^2)*(8)

Simplifying them,we have

  • 20x^4+40x^3−5x^2+35x4−15x^3+40x^2
  • 55x^4+25x^3+35x^2
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Step-by-step explanation:

First, add or subtract both sides of the linear equation by the same number.

Secondly, multiply or divide both sides of the linear equation by the same number.

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2 years ago
Find the average rate of change from x = 3 to x = 15 for the function f(x) = 0.01(2)x
julsineya [31]
The average rate of change for this is the slope of the secant line that connects those 2 points (3, y) and (15, y).  What we need for the slope formula of change in y over change in x are the y values which are unknown as of right now. We can find them though! Don't worry! The equation is y = .01(2)^x. Using that equation, let's sub in both the 3 and the 15 and find the corresponding y values. Subbing in first a 3 gives you y = .01(2)^3, and y = .08.  Subbing in a 15 gives you y = .01(2)^15 and y = 327.68. Now we have the coordinates we need to find the slope of the secant line connecting those 2 points: (3, .08) and (15, 327.6). Fitting those into the slope formula gives us (327.68-.08)/(15-3). Simplifying that is 327.6/12 which divides out to 27.3
3 0
3 years ago
Solve for x. -3(3x+3)= -2x+5
notsponge [240]

Answer:

x = -2

Step-by-step explanation:

So we are given the equation -3(3x + 3) = -2x + 5 and we are solving for x. We will have to try to get the equation into the form x = _. That would be our answer.

-3(3x + 3) = -2x + 5

Distribute the -3 on the left side.

-9x - 9 = -2x + 5

Add 2x to both sides to get rid of the -2x on the right side.

-9x - 9 + 2x = 5

Simplify.

-7x - 9 = 5

Add 9 to both sides to get rid of the - 9 on the left side.

-7x = 5 + 9

Simplify.

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Divide both sides by -7 to get rid of the coefficient of -7 on the left side.

x = 14 ÷ (-7)

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The answer is x = -2.

I hope you find my answer helpful. :)

4 0
2 years ago
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nirvana33 [79]

Answer:

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Hope this helps!!!!!!!!!

Step-by-step explanation:

from the graph attached below:

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3 years ago
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Sever21 [200]
The answer is y=-5x :)
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