Amy would have spent $22.5 on her books (assuming you meant $10 total, not $10 per book)
Your Answer Is...
A) 0.
Why?
This is correct because if 3 = b + 3, then ? + 3 = 3. 0 + 3 = 3, making the answer A) 0.
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My Name: AnonymousGiantsFan
The Pythagorean Theorem states that a² + b² = c², c being the hypotenuse.
Substitute known values into the equation.
7² + 2² = c²
49 + 4 = c²
c² = 53
c = √53
c = 7.28010989
Answer: The hypotenuse's length is 7.3 feet.