3 years ago

Help I can't understand this

Mathematics

1 answer:

Ronch [10]3 years ago

7 0

Answer:

this confuses me... try C.

Step-by-step explanation:

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A hemispherical tank is filled with water and has a diameter of 14 feet. If water

tigry1 [53]

Answer:

$44,826.72\ \text{pounds}$

Step-by-step explanation:

Given that,

The diameter of a hemispherical tank= 14 feet

Radius, r = 7 feet

water

Water weighs 62.4 pounds per cubic foot.

We need to find the total weight of the water in a full tank to the nearest pound.

The volume of the hemisphere is given by :

$V=\dfrac{2}{3}\pi r^3\\\\V=\dfrac{2}{3}\pi \times (7)^3\\\\V=718.377\ \text{feet}^3$

If water weighs 62.4 pounds per cubic foot, it means

$V=718.377\times 62.4\\\\V=44,826.72\ \text{pounds}$

So, the total weight of the water is $44,826.72\ \text{pounds}$ .

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3 years ago

A cell phone plan costs $200 to start. Then there is a $50 charge each month. Is there a proportional relationship between time

xxMikexx [17]

Answer:

Step-by-step explanation:

The equation is

y = 200+50x

This is not a proportional relationship because it does not go through the origin

If x=0, y does not equal 0

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3 years ago

_________ is the quality a design has if it maintains all characterics when it is rotated about a point lying in its plane.

nekit [7.7K]

Answer:

B.) Rotational Symmetry

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3 years ago

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Use f(x)=-2x+5 to find x when f(x)=11

Damm [24]

When it asks this question, ultimately you want to plug 11 into x because its f(x). 11=-2+5.

Then you subtract 5 on both sides because of the opposite of addition is subtraction.

6=-2x

now divide on both sides

x=-3

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3 years ago

( -5/3 ) exponent 2 = ?

ziro4ka [17]

Answer:

25/9

Step-by-step explanation:

I did it on mathaway

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