Bis the midpoint of ac . ab=8v, and ac=2v +42. what is bc

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Select the lengths in centimeters that would form a right triangle

Find the measure of the missing angle