First, use triangle angle sum theorem on the triangle on the right.
180-(43+57)=80
Use vertical angles theorem,
the missing angle of the triangle on left is 80 as well.
Use triangle angle sum theory again.
2x+80=180,
x=50
Answer: C= 10
Step-by-step explanation:
It is a slower rate because marlin can swims 70 miles in an hour and the sail swims 40 miles in 30 mins and then 30 ×2=60 which is an hour then 40×2 =80miles
A is the answer for your question