Mary has taken 7 quizzes in her social studies course. she received the following grades on the quizzes: 94, 74, 78, 90, 85, 82, 78 which statement about mary's grades is true? a. the mean and median are equal. b. the mean and mode are equal. c. the median is 82 and the mode is 78. d. the mean is 83 and the median is 90.

step-by-step explanation:

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .