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Serga [27]
3 years ago
15

How do you do this ?

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

Area of the shaded region = 75.36 in^2

Step-by-step explanation:

You find the area of the large circle and divide it in half.  You find the area of the small circle and divide it in half. Finally, you subtract the small half circle from the large half circle.

A = area

π = Pi = 3.14

r = radius= the distance from the center of the circle to the edge.

A = π * r * r                                                A = π * r * r

A = 3.14 * 8 * 8                                          A = 3.14 * 4 * 4

A = <u>200.96</u>                                               A = <u>50.24</u>

           2                                                              2

A = 100.44 in^2                                        A = 25.12 in^2

100.44 - 25.12 = 75.36 in^2

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Answer:

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Step-by-step explanation:

given f(x)=3(2-x)+5 what is the value of f(-5)?

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Step-by-step explanation:

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The sum of the digits of a two-digit number is 12. The number formed by reversing the digits is 54 more than the original number
andreyandreev [35.5K]

Answer:

39

Step-by-step explanation:

let the 2 digit number be ab = 10a + b ( considering place value )

The reversed  2 digit number is ba = 10b + a

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a = 12 - b → (1)

Expressing as an equation

ba = ab + 54 , that is

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Substitute a = 12 - b into the equation

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9b + 12 = 120 - 10b + b + 54

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18b + 12 = 174 ( subtract 12 from both sides )

18b = 162 ( divide both sides by 18 )

b = 9

Substitute b = 9 into (1)

a = 12 - 9 = 3

Thus

the original 2 digit number = ab = 39

The reversed 2 digit number = ba = 93

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3 years ago
a block has two red sides, two green sides, one blue side and one yellow side what is the probability that when the block is rol
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