Astudent spent 2 hours studying, 1 hour doing laundry, and 1 ½ hours watching television. what percentage of time was spent doing laundry?

An angle that measures between 90 and 180° is called a(,

Need on this geometry question. explain how you did it.

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.