greg9207
15.12.2021 •
Mathematics
Please help me im confused
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Ответ:
Add 9 to both sides.
2x < 7 + 9
Simplify.
2x < 16
Divide both sides by 2.
x < 8
10) Go through each answer choice & check.
a) 4n + 11 > -9
Subtract 11 from both sides.
4n > -9 - 11
Simplify.
4n > -20
Divide both sides by 4.
n > -5
(a) is incorrect.
b) 4n + 11 < -9
Subtract 11 from both sides.
4n < -9 - 11
Simplify.
4n < -20
Divide both sides by 4.
n < 5
(b) is incorrect
c) -4n + 11 <-9
Subtract 11 from both sides.
-4n < -9 - 11
Simplify.
-4n < -20
Divide both sides by -4.
n > 5
(c) is incorrect
d) -4n + 11 > -9
Subtract 11 from both sides.
-4n > -9 - 11
Simplify.
-4n > -20
Divide both sides by -4.
n < 5
(d) is correct
~Hope I helped!~