The sum of two numbers is ten. Using x to represent the smaller number, translate "the difference between twice the larger number and negative twenty" into a variable expression and simplify.

717.7 is what precent of 520

Which decimals in the list are repeating decimals? 1/3 3/5 4/15 5/6 4/1,000 1 / 34

Someone stole 100 bucks from a store, he comeback and buy an something that cost $70 and pay with $100 he stole earlier, the store's owner gave him 30 bucks back as change. How much money the store lost?

A certain type of light bulb has a failure rate of 2.4%. What is the expected number of failures if 800 light bulbs are tested?

You are interested in the probability of drawing 1 yellow marble from a box that contains 20 red marbles, 30 blue marbles, 10 green marbles, and 40 yellow marbles. How could you model the simulation for this situation using random numbers?

The adult hummingbird weights 0.056 ounces. This is three times lighter than the worlds largest butterfly. How much does the butterfly weigh? Express your answer in scientific notation

It takes 36 minutes for 7 people to paint 4walls. How many minutes does it take 9 people to paint 7 walls?

The sales of digital cameras (in millions of units) in year t is given by the function f (t) = 3.06t + 6.84 (0 ≤ t ≤ 3) where t = 0 corresponds to the end of 2001.

Express your answers as reduced, improper fractions, if necessary. Solve 4x^2 + 57 = 226 using square roots.

Larry had $480 he used 2/3 of it to buy an electric band he also bought tea set for 60 how much money did he have left