1. A coin had a value of $257.00 in 1995. Its value has been increasing at 9% per year
1 answer:
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Answer:
x = 15
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 20² = 25²
x² + 400 = 625 ( subtract 400 from both sides )
x² = 225 ( take the square root of both sides )
x = = 15