The highest common factor in the expression 8x -16 is

The factors for 8 are

The factors for 16 are

List all the factors for 8, 16 to find the common factors.

The common factors for 8, 16 are 1,2,4,8.

The numbers do not contain any common variable factors. The GCF (HCF) of the numerical factors 1,2,4,8 is 8.

Hope Helps~

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,