# Exponent Rules

posted by .

SAC = STC/y = (w1(y/240)^2 + 48w2) / y
= (w1)(y/240)^2(y) + ((48)(w2))/y
= (w1)(y/240)^2 + ((48)(w2))/y <-- this is the final answer, but I don't understand it because of this part:

(w1)(y/240)^2(y) -> (w1)(y/240)^2

Don't you add exponents when you multiply variables? So wouldn't it become...

(w1)(y^3/240^2)??

Note: w1, y, w2 are variables

• Exponent Rules -

well, you can add, but remember this

1/y= y-1

• Exponent Rules -

(y^2/240^2)/y

(y^2/240^2)(y/1)

y^3/240^2???

I don't get how y^-1 is relevant to this question since (x/y)/z can be rearranged as (x/y)(z/1)..

## Similar Questions

1. ### Math

If 450 kilowatts of electric used cost 25.32, then how much would 240 kilowatts of electric cost?
2. ### Math ttriangles

how would I find the hieght of a isocscles triangle if the base was 20 and the area was 240?
3. ### Algebra

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet?
4. ### Algebra Repost

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet?
5. ### Is this f'(x) or partial derivative?

Find d VC/ d y = ((y/240)^2)(w) = 2yw/240^2 + 0 + y^2/240^2 but final answer is.... = 2yw/240^2 So, is the question asking for partial derivative or first derivative?
6. ### math

The question is a principal is choosing between field trips. The final cost is \$600. The second costs \$240 plus \$40 per student. For what number of students is the first trip less expensive. I got the 1st trip would be less expensive …
7. ### trig

Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form. [2(cos 240° + i sin 240°)]^5
8. ### Math

You borrow \$2,000 for a period of 4 years. You are charged simple interest at a rate of 3%. How much will you repay at the end of 4 years?
9. ### Math

Your goal is to save at least \$240.00 over the next 4 weeks. How much money must you save each week in order to meet that goal?
10. ### Math

Yoour goal is to save at least \$240.00 over the next 4 weeks.How much must you save each week in order to meet that goal. Write and solve an inequality. a)4x>240;x>60 b)x>240;x>4 c)240x>60;x>60 d)4x<240;x<60******* …

More Similar Questions