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3 years ago

ΔABC is an equilateral triangle. m∠A = (3x - 12)°. Solve for x

Mathematics

2 answers:

dsp733 years ago

8 0

3x-12=60°
3x-12+(12)=60+(12)
3x=72
3x÷(3)=60÷(3)
x=24

pentagon [3]3 years ago

4 0

The answer is: x = 24° .
____________________________________

Explanation: 3(3x - 12) = 180 ; solve for "x" .
__________________________________
9x - 36 = 180 ;

9x = 216 ;

x = 24
__________________________________

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