The base of a solid right pyramid is a square with an edge length of n units. The height of the pyramid is n − 1 units. A solid right pyramid has a square base with an edge length of n units. The height of the pyramid is n minus 1 units. Which expression represents the volume of the pyramid?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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.