The tape diagram represents the ratio of your monthly allowance to your friend’s monthly allowance. The monthly allowances total $84. How much is each allowance? Need help

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?

Solve for x where 0 equation: cot^2x+2cotx+1=0