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How wavelength and wave period can be used to calculate wave speed?
Just divide the wavelength by the wave period, and you've got the wave speed.
What is the frequency of a wave whose period is 4 x 10-7 seconds?
The frequency is the reciprocal of the period; in this case, divide 1 / 4x10-7.
Would you divide or multiply by 60 to find how many hours are driven to and from work in a five day period?
Assuming your figures are in minutes then you would divide by 60 to convert them into hours.
How do you calculate dollar per store per week?
You need to know . . . > the total number of dollars during the period of interest, > the total number of stores, > the number of weeks in the period of interest. When you have collected that information . . . > Divide the total number of dollars by the total number of stores. then > Divide the result by the number of weeks in the period of interest. The result is dollars per store per week during that period.
Is a square always a ractangle?
No. A rectangle is not the same as a square in any way, period.
