Peter elf had 149 presents (not all for him) on christmas eve. on christmas day, he received 132 more presents and he gave away 128 presents. how many did he have to open for himself on christmas day?

A right pyramid is a 3-D figure. Suppose that the base of a right pyramid has a diagonal with a length of 46.67 centimeters. If the height of the pyramid is 24.93 centimeters, find the volume of the pyramid.

Each roll of tape is 30.5 feet long. a box contains 454 rolls of tape. in total, there are _ yards

A jar has 10 red marbles, 6 purple marbles, and 4 turquoise marbles. If you pull a red marble, you win nothing. If you pull a purple marble, you win $2; and if you pull a turquoise marble, you win $5. It costs $3 to play. What is the expected value?

Convert the following decimal or whole number to a percent 1.39

Jill had three full pans of brownies each pan made 10 brownies she gave 3/8 of the brownies to her friends how many brownies did Jill giveaway

What is the formula for interior angle sum

A number changed to 193 after it was rounded. To what place was the number rounded? Explain how you know.

Elissa owns 28% of the grumman corporation. the rest of the shares are owned equally by the remaining six shareholders. what percent of the corporation does each of the other shareholders

A sample of 81 calculus students at a large college had a mean mathematics ACT score of 26 with a standard deviation of 6. Find a 95% confidence interval for the mean mathematics ACT score for all calculus students at this college.

A pet store has 7 cats. Here are their weights (in pounds). 12, 16, 8, 13, 10, 14, 16 Find the mean weight of these cats. If necessary, round your answer to the nearest tenth.