Which statements are true? Check all that apply. Line XY contains ray OX and ray OY. Line XY contains segment YX. and are different segments. Ray BA exists in the diagram. Ray YX exists in the diagram.

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.

What is the measure of one interior angle of a pentagon

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42