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4 years ago

HELPPPPPPPPPP!!!!!!!!!!!

Mathematics

1 answer:

photoshop1234 [79]4 years ago

8 0

B. 30% is the answer

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If the length of a rectangle is 8 and the width is 10. What is its area?

kvv77 [185]

Answer:

80.

Step-by-step explanation:

Area = length x width

Area = 8 x 10

= 80

8 0

3 years ago

Does anyone like anime? this is a semi important question lol

ira [324]

Answer:

depends on the genre.... so sometimes.... Have a good day

Step-by-step explanation:

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3 years ago

Read 2 more answers

The radius of a right circular cylinder is increasing at a rate of 9 inches per minute and the height is decreasing at a rate of

pav-90 [236]

Answer:

$\frac{dA}{dt}=1840.97 in^{2}/min$

Step-by-step explanation:

The equation of the surface of the right circular cylinder is:

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

Now, the rate change of this area will be:

Using the change rule

$\frac{dA}{dt}=\frac{\partial A}{\partial r}\frac{\partial r}{\partial t}+\frac{\partial A}{\partial h}\frac{\partial h}{\partial t}$

Where:

$\frac{\partial h}{\partial t}$ is the rate change of height (-16 in/min)
$\frac{\partial r}{\partial t}$ is the rate change of radius (9 in/min)

$\frac{dA}{dt}=\frac{\partial A}{\partial r}9+\frac{\partial A}{\partial h}(-16)$

$\frac{dA}{dt}=2\pi(h+2r)9-2\pi r16=2\pi((h+2r)9-16r)$

Now, r = 16 and h = 29

$\frac{dA}{dt}=2\pi((29+2*16)9-16*16)$

$\frac{dA}{dt}=1840.97 in^{2}/min$

I hope it helps you!

8 0

4 years ago

Read the statement, and identify the expressions that are equivalent.

Digiron [165]

B. (n + 15) x 3--- That seems to be the correct answer. I hope I helped!

5 0

3 years ago

Put (4 x 10)+ (5x 12)=100 into a word problem

Alexxandr [17]

Answer:

what is 40 plus 60

Step-by-step explanation:

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3 years ago