1 answer:
Answer:
C
Step-by-step explanation:
using Pythagoras' identity in the right triangle
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is
x² = 40² + 9² = 1600 + 81 = 1681 ( take square root of both sides )
x = = 41
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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The answer should be c 4 hours