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snow_tiger [21]
3 years ago
6

Direct Linear Variation-

Mathematics
1 answer:
Stels [109]3 years ago
6 0
This question requires you find the total cost per case
28x=252
divide 28 from each side
x=9
Multiply 9 by 10 to get your answer of $90
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Y_Kistochka [10]

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Step-by-step explanation:

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Answer:

Actually it's not polygon. it's a nonagon. With r=8.65mm″, the law of cosines gives us side a:

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a=√{149.645−149.645cos40°}

Area Nonagon = (9/4)a²cos40°

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Applying an identity for the cos(40°) does not get us very far…

= 336.70125[1−(cos2(20°)−1)]cot(20°)

= 336.70125[2−cos2(20°)]cot(20°)

= 336.70125[2−(1−sin2(20°))]cot(20°)

= 336.70125[1+sin2(20°)]cos(20°)sin(20°)

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3 0
3 years ago
Find the answer for x.
andreev551 [17]

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Step-by-step explanation:

since this is a triangle you would add up all the measure of this and set it equal to 180. 90 is the side with the box. so it would be 2x+15+x+90=180 then solve for x and you would get your answer.

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