The masses mi are located at points pi. Find the moments mx and my and the center of mass of the system. M1=2
M2=9
M3=10

P1 (1,5)
P2 (3,-2)
P3 (-2,-1)

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?