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sergejj [24]
3 years ago
12

The sum of interior angles of a polygon measures 11,520. How many sides does the polygon have?

Mathematics
1 answer:
Digiron [165]3 years ago
4 0
The sum of angles in a regular n sided polygon:

(n - 2)*180

(n - 2)*180 = 11520

(n - 2) = 11520/180

(n - 2) = 64

n - 2 = 64

n = 64 + 2

n = 66

Polygon has 66 sides.
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kogti [31]

Answer:

A. -1⅕

Step-by-step explanation:

-4\frac{4}{5}\div 4 = -4,8\div 4 = -1,2 =  -1 \frac{1}{5}

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7 0
3 years ago
(x + 5 1/2) 0.75= 5/8 What is x?
swat32
<span>(x + 5 1/2) 0.75= 5/8<span>
Convert 0.75 into a fraction
</span></span><span>(x + 5 1/2) 3/4= 5/8
Use distributive property
3/4x + 5 1/2*3/4 = 5/8
Convert 5 1/2 into improper fraction
3/4x + 11/2*3/4 = 5/8
Multiply
3/4x + 33/8 = 5/8
Subtract 33/8 from both sides
3/4x = 5/8 - 33/8
Subtract the numerators but NOT the denominators
3/4x = -28/8
Divide 3/4 on both sides
x = -28/8 divided by 3/4
Convert the division sign to multiplication while flipping the fraction 3/4 to 4/3
x = -28/8 * 4/3
Multiply
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Answer:

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Step-by-step explanation:

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Arte-miy333 [17]
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