Using the Quadratic Formula, which of the following is the solution to the quadratic equation x2 - x - 20 = 0?

A. x = - 5, 4

B. x = 5, 4

C. x = 5, - 4

D. x = - 5, - 4

Leah ran 5/7 of a lap and ryan ran 2/3 of a lap. who ran farther and by how much?

56.78 to 1 significant figure

Choose all that correctly factor the linear expression, a) 25x + 5xy 5x (5 + y) b) 8xz - 12xy -4x (2z + 3y) c) 9xyz + 3xy 3xy (3z + 1) d) 5xz - 18xyz xz (5 - 18y)

What would t be if - 9t+2=56

What are the perfect squares between 100-500 that are even?

Becky is using the expression 2z + 3 to represent the number of chairs in her classroom. There are twice as many chairs as tables, and there are three extra chairs in the back. What does z represent?

The last line of a proof represents the given information. the argument. the conclusion. the assumptions.

The question is solve the standard algorithm

Which is the decimal equivalent of one half?

Charlie saves $21.45 each month for 6 months. in the seventh month, he saves $10.60. how much money will charlie saved after seven months