​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 155 adult​ males, the mean pulse rate 67.9 is bpm and the standard deviation is 10.7 bpm. Find the value of the test statistic.

Look at attachment. has all info needed. need

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.