The half-life of rubidium 89 is 15 minutes if the initial mass of the isotope is 250 g how many grams will be left after hundred minutes

What are two factors of - 45 that add up to 3 and multiply to - 45?

Kim needs to add a 6% saline solution to an IV bag that contains 20 cubic centimeters of 10% saline solution. How many cubic centimeters (cc) of 6% saline solution must she add to create an 8% solution?

Javier bought a painting for $150. Each year the painting's value increases by a factor of 1.15. What's the expression that gives the painting value after 7 years

Which is the correct rule for adding and subtracting signed numbers? Question 1 options: sames signs add and remove the sign and when there are different signs subtract and take the sign of the smaller number same signs add and keep the sign and

What describes this angle?

Subtract [4 - 4 - 2] - [4 - 3 5]. / A. [0 - 7 3] B. [0 - 1 - 7] C. [0 - 1 3] D. [0 - 1 7]

3/3 as a whole number

The side length of a square is equal to?

How many km are in a meter

Mary can read 6 pages in 4 minutes how many can she read in 14 minutes?