What is the solution of the following system? x-y=11

-x+y=-11

The product of 1/2 and another factor is less than 1/2. Which could be the other factor?

A man is walking down a very long flight of steps in a stairwell. He begins at 136 feet above ground level. He walks down at a steady rate such that he gets closer to the ground floor at a rate of 2.8 feet per second.

If f (x) = -x+5and g (x) = x^2 what is (g•f) (-1)

The degree of the term 2x^3 is A. 2 B. x C. 3 D. 2x

What is 5 and one fourth times three

Expand and simplify 9 (2x + 3) + 4x

What is the mean of the following set of numbers? 13, 15, 11, 30, 20, 24, 13 A. 15 B. 13 C. 19 D. 18

The height of an ostrich is 20 inches more than 4 times the height of a kiwi. Write and solve an equation to find the height of the kiwi. Show that your answer is reasonable.

A:b=2:3 b:c=4:7 a:c = x what is x?

What single decimal multiplier would you use to increase by 7% followed by a 4% decrease?