Answer:
I will answer them from top to bottom
1. 2A
2. 2A-B
3. 2A+3A
4. 2(A-B)
Step-by-step explanation:
You don't need an explanation. I am just putting this here so my answer does not get taken down.
I think you got confused with the 50 and 90.
Read my NOTE there it will surely help you answering other questions like this
Step-by-step explanation:
We need to find how many miles per hour she is traveling.
this question can be represented by 5/190
5 divided by 190 is equal to 38. Thus, she is traveling 38 miles per hour or 1/38