Danielle spent a third of her weekly allowance at the movies. To earn more money her parents let her clean the gutters for $10. What is her weekly allowance if she ended with $20?

How to write 300,000,000 in standard form

Jason is going to roll a six-sided die. What is the probability that the die lands on the number 6? Input your answer in fraction form.

What is 8 * 3/4 hour?

Place one or more grouping symbols in this expression [ (5) (3n) + 1 + 8 (2n) - n ] so that it simplifies to 65 when n=2

A box making machine makes cardboard boxes at a rate of 40 boxes per minute. How many minutes does it take to make 360 boxes?

If x is the probability of an impossible event, then which of the following is true? x < 0 x = 0 x > 1

The length of a rectangle is - x - 1 and it's width is 5x+7. Find the perimeter of the rectangle.

Suppose you have an empty jar with a mass of 196.0 g. After filling the jar with jelly beans the mass of the jar + jelly beans is 323.8 g. If the average mass of a Jelly bean is 1.23 grams, estimate how many Jelly beans were added to the jar.

Can anyone simplify? - (2z + 3w - 5t) + 6 (4z - 8w + 2t)

What is the range of the function f (x) = 1/2sin (2x-pi)