On his first 5 biology tests, Bob received the following scores: 72, 86, 92, 63, and 77. What test score must Bob earn on his sixth test so that his average (mean score) for all six tests will be 80?

Suppose $6,500 is divided into two bank accounts. one account pays 10% simple interest per year and the other pays 4.6%. after two years there is a total of $1000 in interest between the two accounts.

When converting original scores to ranks, if three original scores have identical values, they should be?

Saied has a box of 89 postage stamps. He uses some of the stamps to mail letters to his family. Now Saied only has 46 stamps left in his box. How many postage stamps did Saied use to mail letters? 57 stamps 47 stamps 53 stamps 43 stamps

The difference of two numbers is five. Five times the lesser number minus the greater number is - 9. What are the two numbers?

The numbers 1 to 100 are written on a whiteboard. Two players take turns in writing a plus sign or a minus sign between any two numbers. After 99 plays if the final sum is even the first player wins. Which player wins and why?

Annual compounding pays more money than daily compounding.

What is the function rule for the perimeter of a building with a rectangular base if the width is two times the length

What is the answer to 2 (x:6) ?

Spring and neap tides happen at the same time each day a little later each day about a day later each month only once each year

How do you find the absolute value 2]-16.75]