Which expression represents the number of possible combinations of n items taken r at a time?

Polygon for a counter. 12'by3' and count out 3'by2' how much space is left to tile?

3 times what equals 99

Just honest opinion I want to ask look I am Indian so any one interested to be my "friend"

What is P = 3qr solved for q? A) 3rP = q B) P/3r = q C) 3r/p = q D) P/3q = r

N squared minus three n plus 8 if n is equal to 4

What are the zeros of f (x) = x2 - 8x + 16?

What shape has 3 straight sides other than a triangle?

What is the relationship between the value of a dollar and the value of a dime

The Cool Company determines that the supply function for its basic air conditioning unit is S (p) = 40 + 0.008p^3 and that its demand function is D (p) = 200 - 0.16p^2, where p is the price. Determine the price for which the supply equals the demand.

Seven three squared plus ten