Ajar contains ten black and five white marbles two marbles ar chosen without replacement what is the probability of picking a black marble and then a white marble

To prove p is equal to q using an indirect proof what would your starting assumption be?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

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.