Which of the following numbers are imaginary? I. i^2
II. square root of -1
III. 2i
(1) I, II, and III
(2) III only
(3) I and III only
(4) II and III only

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

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.

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?