7.20+6.40 simplifyed

Solve the system by using the substitution method. x+y=3. Y=x^2-7x+11

A out of 10 trials, a receiver got four cards correct. what is her success rate? what is her expected rate of success, assuming she is only guessing?

What is the simplest form of (9/10) squared 2

3. Jada is making a scale model of the solar system. The distance from Earth to the moon is about 2.389 x 10 miles. The distance from Earth to the sun is about 9.296 X 10' miles.

1 and 5/12 as a decimal 1.416667? Do I add the repeating sign to the 6 or the whole decimal?

In 2 hours a candymaker can produce 80 boxes that each contain 10 pieces of candy. How many pieces of candy does the candymaker produce in 6 hours?

What is the answer to 3 3/8 - 1 5/6=

Solve for x. 6 (x+1) - 2x-1 = (x+15) + (x+16) ?

3*3 - 3 - 3:3 - 3 - =

A bicyclist travels at a rate of 13 miles an hour. If the bicyclist continues at this rate, how many miles can the bicyclist travel in 0.5 hour?