If 60% of a radioactive element remains radioactive after 400 million years, then what percent remains radioactive after 500 million years? What is the half-life of this element?

Erica solve the equation negative 5X - 25 equals 78; her work is shown below identify the error and where it is made

Which shows another way to write 132? A. 13 * 13 B. 13 * 2 C. 13 + 2

How do you divide 3681 by 65

CS 125 25 5 What is the pattern as the exponents decrease? subtract 5 from the previous value subtract 100 from the previous value divide the previous value by 5 divide the previous value by 25

Sue has $40,000 in her savings account. She use some of the money to put towards a house. She has $36,479 left. How much did she put towards the house. Solve and write an equation with a variable to represent the unknown.

Find three consecutive even integers such that the sum of the smallest and twice the second is 20 more than the third. Write the second integer below.

Equivalent fractions to three ninths

What would the answer to - |-24| be?

Can the lengths 7,13 and 15 form a triangle? If so, classify it by sides

Twice a number, x, divided by 6 is 42