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sweet-ann [11.9K]
3 years ago
5

An observatory is shaped like a cylinder standing on one of its bases with a dome on top. The

Mathematics
1 answer:
ratelena [41]3 years ago
8 0

Answer:

Option F. 200.96\ ft

Step-by-step explanation:

we know that

The circumference of a circle is equal to

C=\pi D

in this problem

D=64\ ft

substitute

C=\pi (64)=64\pi\ ft -----> exact value of the circumference

Find the approximate value of the circumference

assume

\pi=3.14

64\pi\ ft=64(3.14)=200.96\ ft

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"<span>Evaluate z + z + z for x = 2, y = -3, z = -4."...

Input the information given:
(-4)+(-4)+(-4)
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The answer to the expression would be -12.

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Answer:

The last one

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A tank holds 300 gallons of water and 100 pounds of salt. A saline solution with concentration 1 lb salt/gal is added at a rate
Shkiper50 [21]

The amount of salt in the tank changes with rate according to

Q'(t)=\left(1\dfrac{\rm lb}{\rm gal}\right)\left(4\dfrac{\rm gal}{\rm min}\right)-\left(\dfrac{Q(t)}{300+(4-1)t}\dfrac{\rm lb}{\rm gal}\right)\left(1\dfrac{\rm gal}{\rm min}\right)

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\big((300+3t)^{1/3}Q\big)'=4(300+3t)^{1/3}

Integrate both sides and solve for Q(t) to get

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