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Studentka2010 [4]

4 years ago

6

Suppose the sun casts a shadow off a 35-foot building. If the angle of elevation to the sun is 60°, how long is the shadow to th

e nearest tenth of a foot?

1 answer:

tekilochka [14]4 years ago

4 0

Do 35 divided by 60 degrees

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A cylindrical barrel has a radius of 7.8 m and a height of 8.2 m. Doubling which dimension(s) will quadruple the volume of the b

V125BC [204]

Answer:

Doubling the radius of this cylindrical barrel would quadruple the volume.

Step-by-step explanation:

The volume of a cylinder of radius $r$ and height $h$ is:

$V = \pi \, r^{2}\, h$ .

If radius $r$ stays the same, volume $V$ would be proportional to height $h$ . That is, $V = (\pi\, r^{2})\, h$ . Doubling height $h\!$ would only double $V\!$ .

If height $h$ stays the same, volume $V$ would be proportional to $r^{2}$ , the square of the radius. That is, $V = (\pi\, h)\, r^{2}$ . Doubling radius $r\!$ would quadruple $r^{2}\!$ and thus quadruple $V\!$ as required.

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3 years ago

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Add pairs of adjacent numbers and write their sums in the box above them. What number is at the top of the pyramid?

sergejj [24]

Answer: 62

Step-by-step explanation HI

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3 years ago

11. A scuba diver's elevation changed by -12 3/4 feet every minute. This was

Andrei [34K]

Answer:

-8 1/2 ft / min

Step-by-step explanation:

X = second diver rate

1 1/2 X = -12 3/4

3/2 X = - 51/4

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7 0

2 years ago

Round to the nearest thousands<br> 3475.6993

Andreyy89

3475.699

°°°°°°°°°°°°°°°

Am I correct?

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3 years ago

What is 6•(30+7) equals

dimulka [17.4K]

The equation equals 222

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3 years ago