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

What ia all the common factors of 15,45,90

The dog 24 inches is the total length. Is 4 times longer than a bird. How many inches long is the bird?

The slope of the line is

Lin was looking at the equation 2x - 32 + 4 (3x - 2462) = 14x. She said, "I can tell right away there are no solutions, because on the left side, you will have 2x + 12x and a bunch of constants, but you have just 14x on the right side.

Solve for x. 5 x - 29 > - 34 OR 2 x + 31 < 29

A truck driver makes a trip that covers 2,380 km in 28 hours. What is the driver's average speed?

Is the number - 3 5 48 rational or irrational?

Given that f (x) = x squared minus 3x plus 3 and g (x) = x minus 1 divided 4, solve for f (g (x)) when x = 5

Simplify. 2567 · 162

If 3 apples and 4 bananas cost 1.37 total and 5 apples and 7 bananas cost 2.36 total what is the total cost of 1 Apple and 1 banana?