Emma needs 84 centimeters of ribbons. She measures and cuts a piece from a spool of ribbon. Later she finds out she has actually cut 80 centimeters of ribbon. What is her percent error? Write your answer to the nearest whole percent.

A football player gains 7 yards, loses 4 yards, and gains 12 yards. Write his gains and losses as integers. If he started at zero where does he end up?

The moon is about 240,000 miles from earth what distance written as whole number multiplied by power of ten?

How wide is a rectangle with a length of 38 cm and 8 dm perimeter?

the price of a movie ticket in a given year can be modeled by the regression equation y = 6.94 (1.02^x) where y is the ticket price and x is the year. to the nearest cent which is the best prediction of the price in year 30 (Year 1=2007)

If x = 0, then f (0) =. If f (x) = 0, then x =

What is the product of (8.8 * 10^6) (5 * 10^2) ?

Find the two positive numbers that satisfy the given requirements: "The sum is S and the product is a maximum."

Write an equation of the line that passes through (7,10) and is perpendicular to the line y=1/2x-9.

3 pounds of trill mix put into 8 bags equally what will each bag have

A plane travels 11,000 miles total. The plane travels at 45 miles per hour. How many hours, days, or both does it take to travel?