A group of 67 friends meets for lunch. They greet each other by exchanging fist bumps. How many fist bumps are exchanged if each friend must bump with each of the 66 others?

A triangle with one right angle and no congruent sides.

What's the final elevation if a fish starts at - 9 meters and changes - 11 meters?

What is the LCD of 11/12 and 10/9

A particular model rocket kit uses the scale 1 : 144. The actual rocket is 168ft tall. How tall will the model rocket be when completed

A rectangular prism has a length of 1 1/4 centimeters, a width of 4 centimeters, and a height of 3 1/4 centimeters. What is the volume of the prism? Enter your answer in the box as a simplified mixed number or a decimal.

What would be my steps to solving this problem: x-2y=10 x+3y=5

Why was jesse james in the hospital

Which of the following expressions are equivalent to - 3.5 (2 - 3n) - 2.5n? A: - 7 - 8n B: - 7 + 8n C: - 7 - 13n D: - 7 - n (10.5 - 2.5) E : - 7 + n (10.5 - 2.5

Mya is learning to roller skate. She skates 12 laps in 24 minutes. How many laps could she travel in 72 minutes? Write an equation to solve for this situation.

How many 20-digit numbers are such that the sum of their digits is even?