What is the value of a in the equation 3a + b = 54, when b = 9?
2 answers:
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Answer:
2x
Step-by-step explanation:
we can use the Pythagorean Theorem to find the missing side (a):
a² + (2x)² = (8x)²
a² + 4x² = 64x²
a² = 60x²
a = √60x²
a = ·
·
This can be simplified to be 2x