A group of 68 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 67 others? The total number of fist bumps exchanged is nothing.

What is the decimal multiplier to decrease by 15%?

What is the 2nd term when 3 + 2x2 - 3x4 + x3 is arranged in descending order?

Jason remembers nine digits of a ten digit phone number. He remembers that the last digit is an even number. If he guesses that last digit, what is the probability that he dials the correct number?

Find the rate as a ratio of distance to time 770km, 5hr

I need to know 1/8:x=9

a store has some sale on let supplies the price of each item is marked down 25% the store also offers a coupon for 5 off for when you check out write an expression that represents the final price after a customer uses the coupon

T increased by r the answer

to multiply a number by 12, Carter likes to multiply the number by 10 and then multiply it by 2 and add the product. Write an expression with parenthesis how carter would solve 12*16

How do you solve Precents of

39/51 change to lowest terms