David and Keiko walk around a track. David walks each lap in 9 minutes. Keiko walks each lap in 6 minutes. The two of them begin at the starting line at the same time. They walk until they meet again at the starting line.

Select all the expressions that will include a remainder.

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

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?