The inequality would start out looking like this:

Now it's just a matter of solving the inequalities simultaneously. Get rid of the fraction by multiplying everything by 9:

Then distribute the 5 into the parenthesis:

Now add 160 everywhere:

and finally divide everything by 5:
-22<F<266
It 90 degrees because even though the side lengths change the angle measure doesn’t
Answer:
we can use centeroid formula of a triangle
that is (x1+x2+x3)/3
hope that helps : )
The slope of the ramp would be 5/9