Which factors cause air masses to move in the United States? Check all that apply. prevailing easterlies
prevailing westerlies
jet stream
trade winds
front

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

If point a= (10,4) and b= (2,19) what is the length of ab 17 units 15 units 23 units 12 units