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2 years ago

10

Please help mee l don’t understand new topic please

1 answer:

jasenka [17]2 years ago

4 0

Answer to first four-

first one- 2f+2f=60

4f=60

f=15

second one-18+2d=38

2d=20

d=10

(short side is 9)

third one-2a+a+5+a+5=26

4a+10=26

a=4

long side is 9

short side is 8

fourth one-3xy+3xy+xy=63

7xy=63

xy=9

long side is 27

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Given : ΔPQR, QM is altitude of the triangle

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Putting values of $x^2$ and $y^2$ from [2] and [3 in [1].

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