7a^2+3a-9−7a 2 +3a−9 minus, 7, a, squared, plus, 3, a, minus, 9 from 5a^2-6a-45a 2 −6a−45, a, squared, minus, 6, a, minus, 4. Your answer should be a polynomial in standard form.

Step-by-step explanation:

We are required to evaluate:

First, we open the bracket

Next collect like terms

Simplify your result

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: