Using rigid motion, which statement is true about the triangles? △abc is congruent to △fde . △abc is congruent to △fed the triangles are not congruent. △abc is congruent to △def .

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?