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2 years ago

PLEASE PLEASE solve step by step !!!!!!! I will mark Brianliest correct answer !!!

Mathematics

1 answer:

gulaghasi [49]2 years ago

3 0

Answer:

m<3 = 70 and m<4 = 110

Step-by-step explanation:

<3 and <4 are vertical angles so they add up to 180

(3y + 7) + (5y + 5) = 180

(3y + 5y) + (7 + 5) = 180

8y + 12 = 180

-12 -12

8y = 168

/8 /8

y = 21

find the angle measures:

3(21) + 7

63 + 7

5(21) + 5

105 + 5

110

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lyudmila [28]

${\large{\textsf{\textbf{\underline{\underline{Given :}}}}}}$

★ ∆ ABC is similar to ∆DEF

★ Area of triangle ABC = 64cm²

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${\large{\textsf{\textbf{\underline{\underline{To \: Find :}}}}}}$

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${\large{\textsf{\textbf{\underline{\underline{Solution :}}}}}}$

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❍ Putting the values, [Given by the question]

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$\implies \tt \sqrt{\dfrac{{64 \: cm}^{2} }{ 121 \: {cm}^{2} }} = \bigg( \dfrac{BC}{15.4 \: cm} \bigg)$

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$\implies \tt \dfrac{8 \: cm}{11 \: cm} = \dfrac{BC}{15.4 \: cm}$

$\implies \tt \dfrac{8 \: cm \times 15.4 \: cm}{11 \: cm} = BC$

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★ Figure in attachment.

$\rule{280pt}{2pt}$

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