Hans purchased 29.4 centimeters of wire for 14.70$. Find the unit price in dollars per centimeter

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days

Plz hurry evaluate the expression a+b where a=8 and b=19