Kathy rode her bike 8 miles today. This was 1/4 of the miles she rode this month. How many miles m did Kathy ride her bike this
2 answers:
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Answer:
x = ± 10
Step-by-step explanation:
Given
x² - 100 = 0 ( add 100 to both sides )
x² = 100 ( take the square root of both sides )
x = ± ← note plus or minus, hence
x = ± 10