Evaluate the expression when x = 1/2 and y = - 2/5. Show all work.

1. - x + y

2. x + 2y

What is 400 divided by 10 to the third power?

A few weeks ago, Jenna bought 10 apples from her local farmers' market. Today, she bought 9 apples. What is the percent of decrease in the number of apples bought?

What is (4h^2b) ^2 written in its simplest form?

What is the result when the number 50 is decreased by 10%

Angela filled her car with 22.3 gallons at the start of her trip. Upon arrival she recorded her odometer mileage of 47,156 miles, but she realized she had forgotten to get her beginning mileage.

The probability that an adult possesses a credit card is 0.74. a researcher selected four adults at random. the probability (rounded to three decimal places) that three of the four adults possess a credit card is:

you and four friends go to johnny rockets. you all split the bill equally. each person share was $6.50. how much was the original bill?

One root of the equation x2+6x+q=0 is twice the other root. find q and the roots.

What is the solution of y=2x+1 and 3y=4x+7

What is 55+50. what will be the answer