Mr. singh had three sheets of stickers. he gave 20 stickers from each sheet of his students and has 12 total stickers left. write and solve an equation to find how many stickers were originally on each sheet?

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Find the area of the regular hexagon if a side is 20 cm.