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for more practice, se
solve each problem by drawing a diagram.
1. merchandise displays a store owner stacks
boxes in a pyramid shape like the one at the
right. if the pattern continues, how many boxes
are in a 10-high stack?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

What else equals 42 and 30 for multiply

If you eat 4 medium strawberries, you get 48% of your daily recommenced amount of vitamin c. what fraction of your daily amount of vitamin c do you still need?