help

Question

help

anonymous · Answer

attachment

across · Answer

What parts of it are you struggling with?

anonymous · Answer

the whole thing

across · Answer

Look at the first question: both lines are dotted. That means any choice having a ≤ or a ≥ are wrong. That leaves us with two choices: B. $$3x+2y<6,$$$$3x-5y<20.$$D.$$3x+2y<6,$$$$3x-5y>20.$$Both have the same first equation and the only difference in the second is the direction of the inequality. Let's solve the second equation of the second choice:$$3x-5y>20,$$$$3x-20>5y,$$$$y<(3/5)x-4.$$This one means that the region should be shaded below, which it is. So, the answer is D.

across · Answer

For the second question, you only have to do two things:

1. Simplify the denominator.
2. Rationalize the remaining expression.

across · Answer

For the third question, notice that both lines are parallel and have inverse y-intercepts, so to speak.

across · Answer

To answer the fourth question, you need to know what the discriminant of polynomial is.

across · Answer

Do you understand these questions now?

anonymous · Answer

yes, i understand, thank you .