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Nady [450]
3 years ago
11

An equilateral triangle has a side length of 30.

Mathematics
1 answer:
Lerok [7]3 years ago
5 0

Answer:

x=9

y=3

Step-by-step explanation:

since all three sides of an equlateral triangle are equal:

3x+y=30   then y=30-3x

4x-2y=30

4x-2(30-3x)=30

4x-60+6x=30

10x=90

x=9

3x+y=4x-2y

x=3y

y=3

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