Question

Solve the problem as an inequality.

A parallelogram has a base of 15 and an area which is less than or equal to 45. What is its height?
A. x is less than or equal to 5
B. x is greater than or equal to 5
C. x is less than or equal to 3
D. x is greater than or equal to 3

Answer 1

so 15h is less than or equal to forty-five?

Answer 2

Yes

Answer 3

if you treat the inequality like an equation, you can solve it. if you divide by a negative number, you flip the inequality sign. if you divide by a positive number, you keep the same sign. So, I could have
-3x is less than or equal to 15. I can treat it like
-3x=15. divide both sides by -3, and
x=5. now, since we divided by a negative number, we flip the sign from a less than or equal to sign to a greater than or equal to sign.
but if it was 3x is less than or equal to 15, i would do the same process, but keep the original sign: less than or equal to. is that making sense?

Answer 4

yes it makes sense but just to make sure the correct answer is x<5

Answer 5

but greater than or equal to or less than an equal to?

Answer 6

still les than or equal to because you divided by a positive number. understand?

Answer 7

yes so the answer would be A