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katovenus [111]
3 years ago
8

How do you find the measure of each

Mathematics
1 answer:
bogdanovich [222]3 years ago
4 0
Um, so it's a bit awkward with this question because they actually got the x value incorrect. When they added up all the values, they got 9x - 27 = 180, but it's actually 9x + 27 = 180 because -18 + 45 is positive 27. Anyways, when you solve it correctly you get x = 17, and then you substitute it into the angles. So with 5x - 18, you are saying 5(× 17) - 18 = 67. Then with the other one you do 4(× 17) + 45 = 113. You know that x is definitely 17 because 113 + 67 = 180.
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The answer to the equation is B.

Step-by-step explanation:

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In the diagram below, AB = BD = BC, and mZA = 24°. Find<br> mZC.
snow_tiger [21]

Answer:

m∠C = 66°

Step-by-step explanation:

Since AB = BD, it means this triangle is an Isosceles triangle and as such;

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∠ABD = 180 - 48

∠ABD = 132°

We are told that BC = BD.

Thus, ∆BDC is an Isosceles triangle whereby ∠BCD = ∠BDC

Now, in triangles, we know that an exterior angle is equal to the sum of two opposite interior angles.

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Since ∠BCD = ∠BDC, then

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3 0
3 years ago
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Answer:

A = 307.9 sq/cm

Step-by-step explanation:

Find the radius of the semi-circle

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r = 72%2F%28%282%2Bpi%29%29

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what will be the area of that semicircle?

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