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solmaris [256]
3 years ago
11

C.6 D.5 Geometry math question no Guessing

Mathematics
1 answer:
Katena32 [7]3 years ago
3 0

Set up a ratio 50 / 130 = x+19 / 78

Cross multiply:

50 * 78 = 130 * x+19

3900 = 130(x+19)

Use the distributive property:

3900 = 130x + 2470

Subtract 2470 from each side:

1430 = 130x

Divide both sides by 130

x = 1430 / 130

X = 11

The answer is B. 11


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