Multiple samples of students were asked four questions, with the sampling variability of their answers to question 2 being the highest. question 3 had the second highest sampling variability, question 4 came next, and finally, question 1 had the lowest sampling variability. the answers to which of the questions are most reliable?

50=33x+22

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

the answer is 1030 it's very simple math.