what do you need to know? you should write the question
Answer:
In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols; it is a unifying thread of almost all of mathematics. It includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields.
Step-by-step explanation:
Answer:
D. 3 hours
Step-by-step explanation:
1/5
9/45=1/5
8/40=1/5
I think this is right