<span>Given:
AB = x + 16
BC = 4x + 11
AC= 77
We can safely assume that,
AB + BC = AC
x + 16 + 4x + 11 = 77
5x + 27 = 77
5x = 77 - 27
5x = 50
x = </span>

x = 10
Hence,
AB = x + 16 = 10 + 16 = 26
Hence, proved.
4/14, 6/21, 8/28. Just to name a few
Hello!

Use the Pythagorean Theorem to solve for x:
a² + b² = c²
We are given the lengths of two sides, so we can plug those into the formula:
9² + 12² = x²
81 + 144 = x²
225 = x²
√225 = x
x = 15.
Answer:
C 7 times 5 plus 7 times 4 is the answer
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B a 135899933