What is the sum of
Σ4(0.5) -1,
n=1
O S=1.5
O S = 2
O S = 4.5
O S = 8

Factor the expression using gcf 9b+45

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.