Answer:
B. 
Step-by-step explanation:

Hope this helps
Answer:
B
Step-by-step explanation:
2a+45=180
subtract 45 from both sides which equals 2a=135
divide both sides by 2 which would solve for a.
Answer:
4/10
Step-by-step explanation:
Louise's family traveled 3/10 of the distance to her grandmother's house on Saturday.
Let us represent total distance = 1
The remaining distance left is calculated as:
1 - 3/10
Lowest common denominator = 10
= 10 - 3/10 = 7/10
They traveled 4/7 of the remaining distance on Sunday.
This is calculated as:
= 4/7 × 7/10
= 4/10
What fraction of the total distance to her grandmother's house was traveled on Sunday?