What percent of a sample of As-81 remains un-decayed after 132 seconds?

How algebra tiles represent like terms and zero pairs

A paint can has a radius of 4 inches and a height of 15 inches. What is the volume of the paint can? Round to the nearest tenth. Use 3.14 for Pi. cubic inches

Let EIF be the set of all natural numbers ending in 5. That is, EIF = {5, 15, 25, 35, 45, 55, 65, 75,.}. Describe a one-to-one correspondence between the set of natural numbers and the set of EIF.

Roxanne buys a book about animals during the sale. If the original price was $8, how much does Roxanne pay?

A regular pentagon is shown. A regular pentagon has side lengths of 9.4 centimeters and a radius of 8 centimeters. What is the length of the apothem, rounded to the nearest tenth?

Martinez Corp. uses a perpetual inventory system. Data for product E2-D2 include the purchases shown below. Date Number of Units Unit Price May 7 44 $16 July 28 33 21 On June 1, Martinez Corp. sold 22 units, and on August 27, 33 more units.

Circle E has a radius of 40 inches with = 324°. Find the exact length of

In the number 28,429 how many times greater is the value of the two in the 10,000's place compared to the value of a two in the tens place

How to solve 2x 4=17 step by step?

y varies inversely with x. If x is 6.4 when y is 1.5, what is k, the constant of inverse variation? Round your answer to the nearest hundredth, if necessary.