Trapezoid abcd is congruent to trapezoid a"b"c"d" . which sequence of transformations could have been used to transform trapezoid abcd to produce trapezoid a"b"c"d" ? a. trapezoid abcd was reflected across the y-axis and then across the x-axis. b. trapezoid abcd was reflected across the y-axis and then translated 7 units up. c. trapezoid abcd was translated 7 units up and then 12 units left. d. trapezoid abcd was reflected across the x-axis and then across the y-axis.

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −