In a parking lot, some cars have 1 spare tire and others have no spare tires. all together, there are 43 tires and 9 cars. how many cares have a spare tire?

This is so hard and it’s for a test

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

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?