A6-ft vertical post casts a 10-in shadow at the same time a nearby cell phone tower casts a 125-ft shadow. how tall is the cell phone tower? a 6-ft vertical post casts a 10-in shadow at the same time a nearby cell phone tower casts a 125-ft shadow. how tall is the cell phone tower?

The height of cell phone tower is 75 ft.

Step-by-step explanation:

It is given that a 6-ft vertical post casts a 10-in shadow

The shadow of the cell phone tower is 125 ft.

Let the height of cell phone tower be "x" feet.

1 feet = 12 inches

Thus, shadow of vertical post is

Since the time of day is same, the right angled triangles formed are similar.

Thus,

In feet, The height of the tower is

a) 7x=7

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!