Triangles def and d'e'f' are shown on the coordinate plane below: what rotation was applied to triangle def to create triangle d'e'f'? a. 90° clockwise b. 180° c. none of the above d. 90° counterclockwise

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?