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3 years ago

Plzz help!!! What is the value of both these problems?

Mathematics

2 answers:

sattari [20]3 years ago

3 0

The first one will be 71 as the answer. The second one 62 as an answer

Mnenie [13.5K]3 years ago

3 0

Problem 2

We have an isosceles triangle because of the two congruent sides (21 each).

The angles opposite the congruent sides are known as the base angles, and the base angles are congruent. For now, we don't know what they are. They are both x. I recommend writing 'x' onto the diagram where that missing unmarked angle is.

Then we'll use the idea that all three angles of any triangle always add to 180

x+x+38 = 180

2x+38 = 180

2x = 180-38

2x = 142

x = 142/2

x = 71

<h3>Answer: Choice A) 71</h3>

=======================================================

Problem 3

We use the same ideas as the previous problem. This time the base angles are 56 degrees each. The remaining angle is x.

x+56+56 = 180

x+112 = 180

x = 180-112

x = 68

<h3>Answer: Choice A) 68</h3>

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4 years ago

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3 years ago

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