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pochemuha
3 years ago
11

How do you solve this? Please help!

Mathematics
2 answers:
diamong [38]3 years ago
8 0

Answer:

b

Step-by-step explanation:

u can use the ration method

15:15+36

20:6x-7

then cross multiply

and x =12.5

liubo4ka [24]3 years ago
5 0

Answer:

x = 12.5

Step-by-step explanation:

The large outer triangle and the small inner triangle are similar, thus the ratio of their corresponding sides are equal, that is

\frac{20}{6x-7} = \frac{15}{15+36} = \frac{15}{51} ( cross- multiply )

15(6x - 7) = 1020 ( divide both sides by 15 )

6x - 7 = 68 ( add 7 to both sides )

6x = 75 ( divide both sides by 6 )

x = 12.5

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