Use the half-angle identity to find the exact value of sin 105 degrees.

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

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?

Ineed someone to me answer my question i have to have this done and knocked out