Assume you obtaind the following exam scores from six students: 97,90,86,93,76, and 86
a. find the mean for the scores. i got 88 for the mean.
b. demonstrate that σ (χ - x bar) = 0 for these scores.
c. find the value of σ (χ - x bar)² for these scores.

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

Solve the system of equations y= 3/2 - 1, -x+ y =-3