In the model below, the anchor of a guy-wire is 16 feet away from the telephone pole. John puts a 5 foot pole under the guy- wire parallel to the telephone pole , John knows the distance he put his pole from the anchor, which is
labeled x. John says he can use similar triangles to calculate the height of where the guy-wire meets the telephone pole.
Do you agree with John's statement that he can prove similarity if we know side x? Provide mathematical justification.
N.
5 ft
X
16 ft

f

step-by-step explanation:

f

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.

the answer is d

step-by-step explanation:

he earned 78.75 in interest.

step-by-step explanation: