Answer:48
Step-by-step explanation:
Answer:
add 21 to both sides to get everything on one side
x^2 - 10x + 21 = 0
do factorization, guess and check
(x - 7) (x -3) = 0
x =7, and x =3
812
add the units mL's together
1.5/6
2.1/6
