Which of the following must be given to prove that δabc is similar to δdba? a. segment ad is an altitude of δabc. b. segment cb is a hypotenuse. c. segment ca is shorter than segment ba. d. angle c is congruent to itself.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Select all expressions that are equivalent to 2(3x + 7y). question 1 options: 6x + 14y 6x + 7y 1(6x + 14y)

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.