The graph of which equation will intercept the y-axis at 1?

2x + 5y = 8
5x + 2y = 2
5x + y = 2

a) 5x + y = 2
b) 5x + 2y = 2
c) 2x + 5y = 8
d) none of the graphs have a y-intercept of 1.

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Factor the expression using gcf 9b+45