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3 years ago

In equilateral triangles STU:

Mathematics

2 answers:

Len [333]3 years ago

7 0

<h3>Answer: B) 39</h3>

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Explanation:

Equilateral triangles have three equal sides, ie the sides are all the same length.

Let's set sides ST and TU equal to each other and solve for x

7x-10 = 2x+25

7x-2x = 25+10

5x = 35

x = 35/5

x = 7

Then we use this to compute each side

ST = 7x-10 = 7*7-10 = 49-10 = 39
TU = 2x+25 = 2*7+25 = 14+25 = 39
US = x^2 - 10 = 7^2 - 10 = 49-10 = 39

Each side is 39 units long, so this confirms we have the correct answer.

AysviL [449]3 years ago

5 0

The answer is b 39 pretty sure that’s correct

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