21 divide by 4 is 5.25. She travels 5.25 miles per hour. 42 divide by 5.25 is 8. It would take 8 hours for Shelly to bike 42 miles.
Answer:
it has one solution
Step-by-step explanation:
5y+8= -2
5y= -2-8
5y= -10
divide both sides by 5
-10/2= -2
y= -2
Answer:43.2
Step-by-step explanation:
The answer would be D. Survey a random sample of persons within each geographical region of the city.
This is because the other 3 answers are biased samples of data, which could sway the data collected and/or the decision that is made upon it.
Hope this helps! :)