2 years ago

Please help me with this!! I will mark brainlist!!

Mathematics

1 answer:

kondor19780726 [428]2 years ago

3 0

Answer:

54°

Step-by-step explanation:

Your triangle is isosceles. You have been given the third angle, and you have been asked to find the measure of one of the two equal angles. We know that the internal angles of a triangle sum to 180, so $72+x+x=180 \rightarrow 2x=108 \rightarrow x = 54$

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Answer:

x= 1

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QRS = 40cm

Step-by-step explanation:

4x + 1 = 5x

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QS = 4x + 1 + 5x

= 9x + 1

= 9 + 1

= 10cm

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