The report "undergraduate students and credit cards in 2004: an analysis of usage rates and trends" (nellie mae, may 2005) estimated that 21% of undergraduates with credit cards pay them off each month and that the average outstanding balance on undergraduates' credit cards is $2169. these estimates were based on an online survey that was sent to 1260 students. responses were received from 132 of these students. is it reasonable to generalize the reported estimates to the population of all undergraduate students? address at least two possible sources of bias in your answer.

step-by-step explanation:

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: