Answer:
Concept: Algebraic Manipulation
- We want to make y the main variable. Start by moving y to over to one side or multiplying the inverse.
- So we have

- Rate positively and give brainlist
Answer: Absolute value will alwase be a positive number, while solving an equation that does not involve absolute value could be any number. Positive, negativ, you name it. They ae similer, because either way, you are trying to figure out a varible. -hope this helped! if i misunderstood anything, let me know! i love to improve :D
Answer:
Step-by-step explanation:
90-39=51
Answer:

Step-by-step explanation:
GIVEN: In a
mile race, Janet covered the first
miles at a constant rate. She then speed up and rode her bike the last
miles at a rate that was
miles per minute faster. Janet's overall time would have been
minutes faster had she ridden her bike the whole race at the faster pace.
TO FIND: What was Janet's average speed (in miles per minute) for the whole race?
SOLUTION:
let the speed of Janet in first

speed of Janet's bike in last

total time taken by Janet,


Time taken if Janet rides whole race at faster pace 
As, Janet's overall time would have been
faster had she ridden her bike the whole race at the faster pace.




on solving we get





Average speed 
Average speed 
Therefore average speed of Janet was 