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2 years ago

Please help me please I’m stuck please

Mathematics

2 answers:

Whitepunk [10]2 years ago

8 0

Answer:

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]2 years ago

7 0

 $answer \\ 9 \\ please \: see \: the \: attached \: picture \: for \: full \: solution \\ hope \: it \: helps$ 

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