A few days ago
Anonymous

Alg 2 help 10 pts best answer!!!!!!!!?

How do I solve this?

Solve the inequality 5n^2≥19n+4

A. {n | ≤ -1/5 ≤n ≤ 4}

B. {n | n ≤ -4 or n ≥ 1/5}

C. {n | n ≤ -1/5 or n ≥ 4}

D. {n | -4 ≤ n ≤ 1/5}

Top 2 Answers
A few days ago
bluekitty1541

Favorite Answer

Set this up as if it were an equation, and find the roots.

5n^2 – 19n – 4 >= 0

The roots are -.2 and 4. The only question is whether the solution set lies inside the parabola or outside.

To check, choose a value for n that is between -.2 and 4 and substitute it into the inequality to see if you get a true statement. To make it easy, let’s use zero.

we then get the statement 0 >= 4, which is not true, so the solution set is the area outside the parabola, which translates to n <= -.2 or n >= 4

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A few days ago
LoViE_101
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