In chemistry class, andrew has earned scores of 64, 69, and 73 on three tests. he must maintain an average of 70 to pass the course. what score must andrew earn on the final exam to pass the course?

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

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