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25.01.2021 •
Mathematics
In the diagram, △ABC≅△DEF. Find the values of x and y.
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Ответ:
9514 1404 393
x = 5y = 20Step-by-step explanation:
We need x first.
AB = DE
12 = 3x -3
4 = x -1 . . . . . divide by 3
5 = x
Now, we can find y.
∠C = ∠F
7x +y = 55
y = 55 -7x = 55 -7(5)
y = 20
Ответ:
[A]: 10b − 12a ; AND:
[B]: 10b + 12a ;
Since: " 100b² − 144a⁴ " factors into:
" (10b − 12a) (10b + 12a) " .