Which of the following statements correctly describes the items shown below?

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

Can someone, me with this. i really need with this