Solution:
The angles EBC & ABE form a linear pair.
So, ∠EBC + ∠ABE= 180
3r+10+2r-20 = 180
5r-10=180
5r=180+10
5r=190
r=190/5
r=38
Substitude
Since, ∠EBF = ∠ABE
∠EBF = 2r-20
∠EBF = 2(38)-20
∠EBF=76-20
∠EBF=56 (Answer)
Answer:
Step-by-step explanation:
→ Add the powers together
→ Simplify
4960?
31 times 160 = 4960
33 miles per gallon