Express in words AND mathematically the relationship between a. Period and frequency b. Wavelength and frequency c. Wavelength and period

What is the top speed in a parking lot? a. 10 mph b. 20 mph c. 25 mph d. 30 mph

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

The tension between the issues of slavery and immigration led to the destruction of which political party? a) constitutional union b) democratic c) know-nothing d) whigs