Which operation is NOT closed for polynomials?

A) - (x2 + 4x + 5) (8x2 + 3x + 4)

B) (7x2 + 2x + 3) + (3x2 - 5x + 4)

C) (x2 + 2x + 5) - (x2 - 2x + 9)

D) (x3 + 4x - 5) / (x5 - 2x + 2)

A five digit number has a 3 in the hundred place, a 7 in the greatest place value position, a 9 in the ones place, an 8 in the thousands place, and a 6 in the tens place. What is the number? Use the four step plan

A water storage tank in the shape of a hemisphere has a radius of 30 ft. What is the volume? Round to nearest whole number

You own a company that employs three salespeople, Quentin, Michael and Bubba. Quentin makes 30% of the sales, Michael 45%, and Bubba 25%. While they are all competent, they do not enjoy completing the paperwork on their sales as required by the SEC.

What is (x-5) (x+5) ?

The graph of the function f (x) = - 3x2 - 3x + 6 is shown. Which statements describe the graph? Select three options. On a coordinate plane, a parabola opens down. It goes through (negative 2, 0), has a vertex at (negative 0.5, 6.

Mary has a number cube labeled 2,4,6,8,10, and 12. She will roll the cube 100 times. About how many times could Mary expect the number cube to land on 8?

Caleb has a piece of rectangular paper that is 12 inches wide by 16 inches long. He drew a straight line along the diagonal of the paper. What is the length of the line Caleb drew?

How to do slope intercept form word form?

Question 1) DoorDash charges a fee of $4.25 to deliver food from a local restaurant and $1.35 per mile. Your meal costs $10.

Emily's dog weighs 5 times as much as Alden's dog. Together, the dogs weigh 48 pounds. How much does Emily's dog weigh?