Select the correct answer.

Which value of x makes the equation true?

x + 7 = - 9

A. - 16

B. - 2

C. 2

D. 16

40cents = ? In nickels

Are 9 (4-x) and 36-9x equivalent expressions

There are 3,280.84 feet in a kilometer. There are 5,280 feet in a mile. To the nearest hundredth, how many kilometers are in a mile?

If f (x) = 4x3+3x2-5x+20 and g (x) = 9x3-4x2+10x-55, what is (g-f) (x) ? A) 5x3-7x2+15x-75 B) 5x3+x2+5x+35 C) 13x3-x2+5x-35 D) - 5x3+7x2-15x+75

Determine which is the greater amount of money. Write each as a fraction of a dollar in lowest terms. A. 15 dimes or 7 quarters b. 45 pennies or 8 nickels c. 100 pennies or 25 nickels d. 208 dimes or 50 quarters e. 1,478 nickels or 295 quarters

Thru (4,0) parallel to y=1/2x+5

Find the vertex of this parabola y=x^2-2x

F (x) = 2x - 1 and g (x) = x2 - 3x - 2, find (f + g) (x) A. (f + g) (x) = x2 - x - 3 B. (f + g) (x) = x - 3 C. (f + g) (x) = - x - 3 D. (f + g) (x) = x2 + 5x + 3

What is 0.40x+10=45 in math

when conducting an experiment, why may one group's results be different from another group's results?