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ollegr [7]
3 years ago
6

Which expression helps you find the length x of a side of a rectangle that has a diagonal of 15 units and a width of 9 units?

Mathematics
1 answer:
amid [387]3 years ago
8 0
A. x^2 = 15^2 - 9^2

Here's why:
c^2 = a^2 + b^2

from the question:
15^2 = 9^2 + x^2

15^2 - 9^2 = x^2 which is similar to answer in A.
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