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3 years ago

Please help quickly!! thanks!! :))

Mathematics

1 answer:

Svetlanka [38]3 years ago

3 0

ANSWER:D

Explained:
When in form y=mx+c , the c is the y intercept

Y^2=-x^2 +64
Y=-x + 8

For circle to cut x axis y must = 0
So Y=-x+8 becomes...
0=-x+8 |minus 8 from both sides
-8=-x
So x=8

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10 ÷ 5 + 10 – 9 x 11 Solve with pemdas

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Answer:

explanation 5 + 9 = 10 - 11 that is your answer if I am not wrong

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A pair of basketball shoes was originally priced at $80, but was marked up 37.5%.

Tanzania [10]

Answer:

110

Explanation:

First move the decimal point over to the left twice.

.375

Then multiply 80 by .375 like this :

.375 x 80 = 30

Lastly, add 30 to 80 and put the dollar sign.

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Solve R=D-T/3 for the variable D

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Answer:

D = $\frac{3R+T}{3}$

Step-by-step explanation:

given R = $\frac{D-T}{3}$

multiply all terms on both sides to eliminate the fraction

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3R + T = 3D ( divide both sides by 3 )

D = $\frac{3R+T}{3}$

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A container manufacturing company was contracted to design and manufacture cylindrical cans for fruit juice. The volume of each

gtnhenbr [62]

The volume of the cylinder is the amount of fruit juice it can contain.

The relationship between the volume and the surface area is:

$\mathbf{A = \pi (\sqrt[3]{\frac{V}{2\pi}})^2 + \frac{0.946}{(\sqrt[3]{\frac{V}{2\pi}})}}$

The given parameter is:

$\mathbf{V = 0.946}$

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$\mathbf{V = \pi r^2 h}$

Make h the subject

$\mathbf{h = \frac{V}{ \pi r^2}}$

The surface area (A) of a cylinder is:

$\mathbf{A = \pi r^2 + \pi rh}$

Substitute $\mathbf{h = \frac{V}{ \pi r^2}}$

$\mathbf{A = \pi r^2 + \pi r \times \frac{V}{\pi r^2}}$

$\mathbf{A = \pi r^2 + \frac{V}{r}}$

Differentiate

$\mathbf{A' = 2\pi r - Vr^{-2}}$

Set to 0

$\mathbf{2\pi r - Vr^{-2} = 0}$

Rewrite as:

$\mathbf{ 2\pi r = Vr^{-2}}$

Multiply through by r^2

$\mathbf{ 2\pi r^3 = V}$

Solve for r

$\mathbf{r = \sqrt[3]{\frac{V}{2\pi}}}$

$\mathbf{A = \pi r^2 + \frac{0.946}{r}}$

So, we have:

$\mathbf{A = \pi (\sqrt[3]{\frac{V}{2\pi}})^2 + \frac{0.946}{(\sqrt[3]{\frac{V}{2\pi}})}}$

Hence, the relationship between the volume and the surface area is:

$\mathbf{A = \pi (\sqrt[3]{\frac{V}{2\pi}})^2 + \frac{0.946}{(\sqrt[3]{\frac{V}{2\pi}})}}$

Read more about surface areas and volumes at:

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A car dealership manager has determined that the profit, in thousands of dollars, of the dealership can be determined by the exp

ss7ja [257]

Answer:

The number of cars that brings the same profit is 9 and 0

Step-by-step explanation:

Given

$x^2 - 4x = 5x$

Required

Determine the possible values of x

$x^2 - 4x = 5x$

Subtract 5x from both sides

$x^2 - 4x - 5x = 5x - 5x$

$x^2 - 9x = 0$

Factorize

$x(x - 9)= 0$

Split the equation

$x = 0$ or $x - 9 = 0$

$x = 0$ or $x = 9$

<em>Hence, the number of cars that brings the same profit is 9 and 0</em>

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