HELP! the age of five siblings are as follows: 2,5,7,9,11,15.Is this normal distribution or not? use mean, median, mode to answer the question?​

mean-8.167

median -8

there is no mode

Step-by-step explanation:

mean 2+5+7+9+11+15 = 49

49÷6=8.166666667

median its the middle number which is 7 and 9

7+9=16÷2 = 2

and the mode is the most frequently repeated number and non is repeated ..

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.