Must the sum of three polynomials again be a polynomial?

A flag stick on a golf course that is 6 1⁄2 feet tall casts a 9 3⁄4 foot shadow while a golfer nearby casts a 8 3⁄4 foot shadow. How tall is the golfer?

Find the real zeros of the function f (x) = x^4-15x^2+10x+24

How could you use compensation to find 391-26

What is 1/7 the speed of a cheetah if it runs 70 miles per hour?

Which of the following represents "The sum of the abscissa and the ordinate is six"? x + y = 6 xy = 6 6xy

What is the estimated sum? round each number to the nearest hundred before adding. 521,370 26,839

You are planning a 420 mile trip. You will drive at a rate of 60 mph. After 2 hours of driving you stop for 15 minutes. After two more hours, you will stop for 30 minutes to eat. Two hours later, you will stop for 15 minutes again.

The results from spinning a spinner multiple times are given in the table below. Color Frequency blue 17 yellow 14 green 13 red 9 purple 17 What is the experimental probability of spinning purple? A 17/43 B 17/50 C 17/70 D 17/60

Does the graph represent a function? Why or why not? -10

Simplify the following expression. (1/7x+3/8) + (2/9x-1/8)