The faces of a number cube are numbered 1 through 6. event a = {rolling a 5 or 6}. what is the complement of event a a. {rolling a 1, 2, 3, or 4} b. {rolling a 1 or 2} c. {rolling a 3,4,5, or 6} d. {rolling a 3 or 4}

Math each whole number with a rational,exponential expression

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.