Questions: 1. Find the probability of there being 0, 1, 2, 3, 4, and 5 goals scored in a regulation length world cup game by modeling it as a binomial random variable with n=9 and p = 1/4.

50=33x+22

step-by-step explanation:

you should at least use a calculater

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.