Combine the like terms to create an equivalent expression: 5n + 6 +(-7n) - 9
1 answer:
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Answer:
x = 4
Step-by-step explanation:
Since the triangle is right, solve for x using Pythagoras' identity, that is
x² = 8² + 4² = 64 + 16 = 80
Take the square root of both sides
x = =
=
×
= 4
← exact value
