A spinner was spun 30 times. A 1 was spun nine times, a 2 was spun five times, a 3 was spun three times, a 4 was spun five times, and a 5 was spun eight times. Which is the empirical probability of spinning a 1?

A. 3/10
B. 1/5
C. 1/6
D. 2/15

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.