Aset of test scores is normally distributed with a mean of 80 and a standard deviation of 4.5 what percent of the score were below 71
a) 2.35%
b) 13.5%
c) 2.5%
d) 16%

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is