State the operations used to solve the following equation. 2x + 8 = 9 A
Subtract 8 from both sides, divide by 2 on both sides.
B.
Add 8 to both sides, multiply by 2 on both sides.
С
Divide by 2 on both sides, subtract 8 from both sides.
D
Subtract 9 from both sides, divide by 9 on both sides.

Evaluate cos2θ for cosθ = square root of 3/2

What value of x is in the solution set of 4x – 12 s 16 + 8x?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?