sophiat17
01.10.2019 •
Mathematics
Needed! 30 points! what is the value of x and the length of segment de?
x =
length of de = units
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Ответ:
Finish the equation given for x:
10x +15 = 9(9)
= 10x +15 = 81
Subtract 15 from both sides:
10x = 66
Divide both sides by 10:
x = 66/10
X = 6.6
Now replace x with 6.6 in the equation for DE:
DE = 2(6.6) +3
Simplify:
DE = 13.2 + 3
DE = 16.2
Ответ: