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Ber [7]
3 years ago
15

Please help me please I’m stuck please

Mathematics
2 answers:
Whitepunk [10]3 years ago
8 0

Answer:

9

Step-by-step explanation:

The ratio of 5 to 5+3 is equivalent to the ratio of 15 to 15+x. This is because when you have a triangle inside of a triangle and both of them share two of the same sides and the third sides are parallel to each other, the side ratios of the triangles are always proportionate.

\frac{5}{5+3} =\frac{15}{15+x}   Starting equation

\frac{5}{8} =\frac{15}{15+x}   Simplify

5(15+x)=8*(15)   Cross multiply

75+5x=120   Distributive Property on left and simplify on right

5x=45   Isolate the variable

x=9   Divide both sides by 5 (Division Property of Equality)

attashe74 [19]3 years ago
7 0

<em>answer \\ 9 \\ please \: see \: the \: attached \: picture \: for \: full \: solution \\ hope \: it \: helps</em>

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Answer:

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