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3 years ago

A square has a perimeter of 76 cm. Each side measures x + 3.

Mathematics

1 answer:

Alexus [3.1K]3 years ago

4 0

A square has all equal sides, so 76/4 is 19.
19=x+3
Subtract the three from both sides
16=x
Or
X= 16 cm

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y = x2 - 6x - 8 Complete the square in the quadratic equation in order to write the equation in vertex form.

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Answer:

y = (x-3)^2 - 17

Step-by-step explanation:

To complete the square, take the middle term bx and divide it in two. Then take the square.

x^2 - 6x - 8 has bx = -6x. Take -6/2 = -3. Square -3^2 = 9.

Now to finish completing the square add 9 and subtract 9 from one side.

y = x^2 - 6x - 8

y = (x^2 - 6x +9) -9 - 8

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Answer:

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Answer:

The profit function is:

$P(x)=-x^2+1280x-3300$

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Step-by-step explanation:

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And the cost function is:

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Then the total profit function will be:

$P(x)=R(x)-C(x)=(1300x-x^2)-(3300+20x)=-x^2+1280x-3300$

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$\displaystyle \Big(-\frac{b}{2a}, f\Big(-\frac{b}{2a}\Big)\Big)$

In this case, a = -1, b = 1280, and c = -3300.

Then the point at which the maximum profit occurs is at:

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And the maximum profit will be:

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