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Anestetic [448]
2 years ago
11

I need help on these 2 questions how did I get it wrong? and for question 3 I'm not supposed to have the = sign so what am I sup

posed to replace it with?​

Mathematics
2 answers:
dmitriy555 [2]2 years ago
5 0

Answer:

3.

m + 7 ≥ 20

Subtract 7 on both sides,

m ≥ 20 - 7

m ≥ 13

The answer is m ≥ 13.

( you need to include both > and =, that is ≥ )

4.

2.1x = 23.1

Divide 2.1 on both sides,

x = 23.1 / 2.1

x = 11

trasher [3.6K]2 years ago
5 0

Answer:

For problem #3, we are given m+7\geq 20 so we would just subtract 7 from both sides to get rid of the 7 on the left and that would end up subtracting 7 from 20 also leaving us with m\geq 13.

For problem #4, we are given 2.1x=23.1 so we would just divide both sides by 2.1 which would get rid of the 2.1 on the left and that would also make us divide 23.1 by 2.1 leaving us with x=11.

<u><em>Hope this helps!  Let me know if you have any questions</em></u>

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