A group of 66 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 65 others?

X+5/2=10 I need to know how it is worked out.

Can a linear function be curved

Which equation could be used to find the perimeter of a rectangle that has a width of 12 cm and a length of 16 cm? a. P = 2 · 12 + 2 · 16 b. P = 2 · 12 + 16 c. P = 12 · 16 d. P = 12 + 16

Find all prime numbers that differ by 17.

An assembly line produces 20 items per hour. If the line runs 24 hours per day, 7days week, how many items are made by this machine in one mouth? (assume 30 days/month) A) 3,360 B) 13,440 C) 14,400 D) 100,800

How many 6s are there in 285

Complete the pattern 0.02 blank 20 blank blank

Five cats each ate 1/4 cup of canned food and 1/4 cup of dry food. how much food did they eat altogether

Solve on the interval [0, 2Pi): 1 + cos (theta) = (sqrt (3) + 2) / 2 A. Pi/6, 5Pi/6 B. Pi/3, 5Pi/3 C. Pi/6, 11Pi/6 D. 7Pi/6, 11Pi/6

Eli invested a total of $2000 in two stocks. One stock cost $18.50 per share, and the other cost $10.40 per share. Eli bought a total of 130 shares. Write and solve a system of equations to find how many shares of each stock Eli bought.