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2 years ago

Select the three inequalities that have n = 3 in the solution set

Mathematics

2 answers:

kherson [118]2 years ago

6 0

Answer: A, C, E

Solve for all the inequalitites.

n + 5 < 9

n < 9 - 5

n < 4

∴ n = 3 is a part of the solution set.

13n < 1

n < 1/13

∴ This definitely doesn't include n = 3.

3n + 1 > 7

3n > 6

n > 2

∴ n = 3 is part of the solution because n is larger than 2.

3n > 9.5

n > 9.5 ÷ 3

n > 3.16666666

∴ n = 3 is not part of the solution set.

n - 2 < 5

n < 5 + 2

n < 7

∴ n = 3 is a part of the solution set.

SCORPION-xisa [38]2 years ago

4 0

Answer:

Its just E

I'm sorry if I'm wrong

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