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Pls help I really don’t get it

Pls Help I Really Dont Get It class=

Sagot :

Olivieremadidn

Answer:

9

Step-by-step explanation:

hope u understand sorry for bad photo

View image Olivieremad
Hrishiiidn

Answer:

x = 9

Step-by-step explanation:

[tex] \triangle ABC\sim \triangle ADE.... (given) [/tex]

[tex] \therefore \frac{AB}{AD} = \frac{BC}{DE}.... (csst) [/tex]

[tex] \therefore \frac{28}{20} = \frac{2x+3}{15}[/tex]

[tex] \therefore \frac{7}{5} = \frac{2x+3}{15}[/tex]

[tex] 5(2x+3) = 7\times 15[/tex]

[tex] 10x+15 = 105[/tex]

[tex] 10x = 105-15[/tex]

[tex] 10x = 90[/tex]

[tex] x = \frac {90}{10}[/tex]

[tex] x = 9[/tex]

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