Ignore above
your equation is 2(cosx)^2-3cosx+1=0
use quadratic formula to get results
you will end up with
cosx=1 or cosx=1/2
so, x=0 or x=pi/3
We assume that we need to simplify the expression in two different ways.
Answer:
One way: Raise both, the numerator and denominator, to the third power, and then simplify the expression.
Second way: Simplify the terms inside parentheses, and then raise the result to the third power.
The result of both ways is the same: 
Step-by-step explanation:
<em>One way</em>
Raise both, the numerator and denominator, to the third power, and then simplify the expression:





This is the first simplification.
<em>Second way</em>
Simplify the terms inside parentheses, and then raise the result to the third power.






or
.
Answer:
A is b/c the 2 minutes and 54 seconds are 174 seconds and the .29 also gets carried over, so it is 174.29. (You are converting minutes to seconds [60 seconds=1 minute])
B the average time of the four runners would be 43.5725 seconds, b/c 174.29/4=43.5725
Answer:
Step-by-step explanation:
Horizontal cross-section of a cylinder is a circle with same dimension as its base
<u>Given diameter </u>
<u>Area formula</u>
<u>So the area of cross section is: </u>
- A = 3.14*12²/4 = 113.04 square inches