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bbgirl2505
20.11.2019 •
Mathematics
100pts giving brainliest (:
find x and y, given that line kl and line mn are parallel
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Ответ:
x = 21.2
y = 6.470588235
Step-by-step explanation:
We can use similar triangles and proportions to solve.
KJ KL
=
JM MN
Substituting what we know
5 y
=
5+12 22
Using cross products
5*22 = (12+5)y
5*22 = (17)y
Divide each side by 17
5*22/17 =17y/17
110/17 = y
6.470588235 =y
KJ JL
=
JM JN
Substituting what we know
5 8
=
5+12 8+x-2
Using cross products
5 *(8+x-2) = 8(5+12)
5*(6+x) =8*17
Distribute
30+5x = 136
Subtract 30
30-30 +5x = 136-50
5x = 106
Divide by 5
5x/5 = 106/5
x =21.2
Ответ:
(section d)