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.

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

What is x and y intercepts for y=x+7