A park ranger wants to know the mean number of nights students in your school plan to camp next summer. The park ranger randomly surveys 10 students from each class. The results are shown
Nights Camping
A: 0, 5, 2, 3, 0,6, 0, 10, 3,0
B: 14.0.0, 6.5, 0. 1. 2.2.5
C: 8, 8, 2, 3, 4, 1, 0, 0, 0,6
D: 10, 10, 5, 6, 1, 0, 0, 0, 4.0
a. Use each sample to make an estimate for the mean number of nights students in your school plan
camp next summer.
Sample
A
B
с
D
Mean
2.9 3.5 3.2 3.6

i used to know how to do this in 7th but i forget easily

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.