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Simple Calculator Calculation
Simple Calculator Calculation
Sara had 88 dollars to spend on 8 books. After buying them she had 16 dollars. How much did each book cost?
2 answers:
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Refer to the diagram shown below.
Let x = the length of the third side (the hypotenuse) of the right triangle.
From the Pythagorean Theorem, obtain
x² = 9² + 40² = 81 + 1600 = 1681
x = 41
Answer: 41
Let x = the length of the third side (the hypotenuse) of the right triangle.
From the Pythagorean Theorem, obtain
x² = 9² + 40² = 81 + 1600 = 1681
x = 41
Answer: 41