3 years ago

What is the exactly volume of the cone to the left?

Mathematics

1 answer:

KIM [24]3 years ago

5 0

The answer is Q. 78 (pi) cubic meters

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What’s the perimeter of a rectangle with a length of 4.2cm and a width of 2.8cm

STALIN [3.7K]

4.2 + 4.2 + 2.8 + 2.8 = 14

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2 years ago

Mrs. Baker paid $2.50 for 5 pounds of bananas. Write an equation realating the cost c to the number of pounds p of bananas. How

irakobra [83]

Work- 5 ÷ 2.50 = .50
8x.50= $4

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2 years ago

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Is 6 a solution to the equation? Show your work.

meriva

Answer:

yes I think 6 is a solution to the equation

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2 years ago

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The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

Thus, $du = 8dx.$

So,

$xdx = \frac{1}{8}du$

Also, the interval of the integration changes to [ 37, 65]

Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

= $\frac{1}{6} [ 65^{\frac{3}{2}-37^{\frac{3}{2} } }$

= 156.5 units²

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3 years ago

Solve the equation.

djverab [1.8K]

(y - 5)/3 = 1
y - 5 = 3 x 1 = 3
y = 3 + 5 = 8

6x + 29 = 5
6x = 5 - 29 = -24
x = -24/6 = -4

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3 years ago

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