4 years ago

PLEASEEEE HELP ASAPPP ILL MARK BRAINLIEST IMPORTANT TO SHOW YOUR WORK

Mathematics

1 answer:

geniusboy [140]4 years ago

4 0

Answer:

AC = 7.5 cm

Step-by-step explanation:

Given that the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{AC}{DE}$ = $\frac{BC}{DE}$ , substitute values

$\frac{AC}{3.5}$ = $\frac{7+8}{7}$ , that is

$\frac{AC}{3.5}$ = $\frac{15}{7}$ ( cross- multiply )

7AC = 52.5 ( divide both sides by 7 )

AC = 7.5 cm

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