Answer:
D. 17
Explanation:
AB + BC = AC
2x - 4 + 3x + 2 = 23
(Combine alike terms)
5x - 2 = 23
(Transpose)
5x = 23 + 2
5x = 25
(Divide by 5)
x = 5
(Substitute)
BC = 3x + 2
BC = 3(5) + 2
BC = 15 + 2
BC = 17
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Answers & Comments
Answer:
D. 17
Explanation:
AB + BC = AC
2x - 4 + 3x + 2 = 23
(Combine alike terms)
5x - 2 = 23
(Transpose)
5x = 23 + 2
5x = 25
(Divide by 5)
x = 5
(Substitute)
BC = 3x + 2
BC = 3(5) + 2
BC = 15 + 2
BC = 17