Answer: 1
Step-by-step explanation: use foil and get 4-3.
1. Simplified form of: 3 a^4 * 4 b^(-2) * c^3 =
= ( 3 a^4 * 4 c^3 ) / ( b^2 )
Answer: d.
2. If a = - 5,
- a^(-2) = - ( - 5 )^(-2) = - ( 1/ 5^2 ) = - 1/25
Answer: c.
3. If m = 2 and n = - 24:
( - 2 )^(-3) * ( - 24 ) = 1 / (- 2 )^3 * ( - 24 ) = - 1 / 8 * ( - 24 ) = 24 / 8 = 3
Answer: a. 3
Okay so because it's 10% off you're going to take the original price ($25) and move the decimal over once. So, $2.50. Now back to the original price!
$25.00 - $2.50 = $23.50 for the sweatshirt. I don't think I explained that very well, but that'd be how you found your answer?
To find r, you can multiply both sides by πr²
You would then get:
513πr² = 79,000
Then to isolate r, you can divide 513π on both sides.
(513πr²)/(513π) = 79,000/(513π)
r² = 79,000/(513π)
To finally get r, you can take the square root of both sides.