Answer:
that box means the angle is 90 degrees.
Step-by-step explanation:
if you need anymore help just message me
Answer: 24
Step-by-step explanation:
you add 12 to 39 which equals 51 then you subtract 51 from 75 which equals 24
hope this helps
All you have to do is divide 1/2 from both sides to leave a by itself , you will get 1.2