Below are five number sequences. which ones are geometric sequences? check all that apply. a. 1/4, 1/2, 1, 2, 4, b. 2, 3, 5, 9, 17, c. 1/3, 2/9, 3/27, 4/81, 5/343, d. 3, -15, -33, -51, -69, e. 2, -14, 98, -686, 4802,

A.1/4, 1/2, 1, 2, 4, ...

Step-by-step explanation:

1\4 X 2 = 1\2 X 2 = 1 X 2 = 2 X 2 = 4 and so on

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.