The perimeter of a rectangle is 20 centimeters, the length is 6 centimeters.
what is the area of the rectangle?

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.

Yvaries inversely as x. y =12 when x=5. find y when x=4

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale