Answer:
x = ± 4
Step-by-step explanation:
Given
x² - 1 = 15 ( add 1 to both sides )
x² = 16 ( take the square root of both sides )
x = ± = ± 4
Haily walked 15 miles in 9 hours. What was her walking rate in miles per hour? Express your answer in simplest form
2 answers:
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