Radium-226, a common isotope of radium, has a half-life of 1,620 years. How many grams of a 120-gram sample will remain after t years?

The product of a 3x3 and a 6x6 matrix would be

Adam bought a apples for $1.50 each and b oranges for $2 each. He spent 1.50a+2b dollars. What does 2b represent? Solve for a when b = 7 and Adam spent a total of $20.00

A (5,2), B (5,4), C (2,4), D (2,2)

Hannah travels 6 times as many minutes as raoul does together they travel 63 minutes? how many minutes does hannah travel

Kelly bought 8 towels and spent $39.60 each towel cost the same amount, create an equation that can be used to determine the price in dollars of one towel.

Find the number of all the 3-digit numbers which are divisible by 2 but not divisible by 10.

If 3∈A and 3B, then which of the following statements is not true? A. 3 is an element of B complement. B. 3 is an element of A∪B. C. 3 is an element of A∩B.

84-63i in conjugate form?.

A company is planning to manufacture mountain bikes. The fixed monthly cost will be $100,000 and it will cost $200 to produce each bicycle. Write the cost function, C, of producing x mountain bikes per month. C (x) =

Find the rate of Change y=2x+9