ryanbasdao
21.10.2020 •
Mathematics
Two times the difference of 13
and a number is -4. Write an
equation representing this
situation and solve for the
number.
Solved
Show answers
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Ответ:
Step-by-step explanation:
let number be x
CASE 1) when x>13
2(x-13) = 4
2x - 26 = 4
2x = 30
x = 15
CASE 2) when x<13
2(13 - x) = 4
26 - 2x = 4
26 - 4 = 2x
22 = 2x
11 = x
Ответ:
DE^2 + DF^2 = EF^2
Since DE = 4 in, the only possible result of the triangle would be :
DE = 4 in
DF = 3 in
EF = 5 in