The us postal service delivered 7.14 x 1010 pieces of mail in the month of december and 3.21 x 1010 in the month of january. what is the total mail delivered for these two months?

Find the value of x that will make l ll m

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Write the rational number in lowest terms 99/-15