Consider the steps to simplify the expression. what property of operation is used in step 2? expression: -4 3 7 + 7 - 3 4 7 step 1: = -4 3 7 + 7 + (-3 4 7 ) step 2: = -4 3 7 + (-3 4 7 ) + 7 step 3: = -4 + (- 3 7 ) + (-3) + (- 4 7 ) + 7 step 4: = -4 + (- 3 7 ) + (- 4 7 ) + (-3) + 7 step 5: = -4 + (-1) + (-3) + 7 step 6: = -8 + 7 step 7: = -1

On a piece of paper graph f(x)=5•(0.4)^x

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

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never