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Sever21 [200]
3 years ago
9

A metal washer has an outer diameter of 14mm and an inner diameter of 6mm.Use the value of 3.14 for the to find the area of the

metal washer
Mathematics
1 answer:
Elena L [17]3 years ago
3 0

Answer:

502.4 mm^2

Step-by-step explanation:

First find the area of the larger circle, and then that of the smaller one.

Then subtract the latter (2nd) area from the first.

larger circle area           smaller circle area

-------------------------           ---------------------------

 3.14(14 mm)^2                   3.14(6 mm)^ 2

This comes out to 3.14[14^2 - 6^2] mm^ 2 =  3.14[196 - 36] mm^2, or

3.14(160 mm^2) = 502.4 mm^2

The area of the metal washer is 502.4 mm^2.

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kow [346]
Julie wants to buy cartons of apple juice with $55. Each carton costs $3.75.
Let x be the number of cartons she can buy.

3.75x =< 55
Divide both sides by 3.75
3.75x / 3.75 =< 55/3.75
x =< 14.66666

Of course, she can't buy 14.666 cartons so we can the integer part only. Julie can buy 14 cartons of Juice.

Hope this helps! :D
8 0
3 years ago
BRAINLIEST and Points! :)
Norma-Jean [14]

Answer:

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Step-by-step explanation:

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That is the final Answer.

Hope that can help you !

6 0
3 years ago
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Troyanec [42]
Check the picture below.

8 0
3 years ago
Find cos(ZA).<br> Choose 1 answer:
lbvjy [14]

Answer: option A. 24 / 25

Step-by-step explanation:

Cos (Z) = Adj / Hypo

Cos (Z) = 24 / 25

3 0
3 years ago
Match each power of a power expression with its simplified expression.
VARVARA [1.3K]

Answer:

> (4^6)^{-3} = \frac{1}{4 ^ {18}}

> (4^{-3})^{-3} = 4 ^ 9

> (4^0)^{-9} = 4 ^0

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Step-by-step explanation:

We have to expand the powers of each of them:

> (4^6)^{-3} = 4^{(6 * -3)}

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(4^6)^{-3} = \frac{1}{4 ^ {18}}

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> (4^0)^{-9} = 4 ^ {(0 * -9)}

  (4^0)^{-9} = 4 ^0

> (-4^{-9})^2 = -4 ^ {( -9 * 2)}

  (-4^{-9})^2 = -4 ^ {-18}

8 0
3 years ago
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