In the diagram below, BC is an altitude of ABD. To the nearest whole unit, what is the length of CD. Please explain.

Can you me find the missing length. i attached an image.

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is