lexxa58
15.01.2021 •
Mathematics
EFGH is an isosceles trapezoid. If EG=3y+19 and FH=11y-21, find the value of y.
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Ответ:
y = 5
Step-by-step explanation:
The diagonals of the isosceles EFGH are equal. Therefore:
EG = FH
EG = 3y + 19
FH = 11y - 21
Thus:
3y + 19 = 11y - 21
Collect like terms
3y - 11y = -19 - 21
-8y = -40
Divide both sides by -8
y = 5
Ответ: