John will need to sleep for 10.3 hours before his second exam so that the
average of his two exam scores is an 80.
We were given
8 hours of sleep = 70
To get average of 80
<u>70+ x</u> = 80
2
Cross multiply:
70+x = 160
x= 160-70
= 90.
If 8 hours of sleep = 70
x hours of sleep = 90
Cross multiply
8× 90 = 70 × x
720 = 70x
x = 720/70
x = 10.2857
≈ 10.3 hours of sleep
Read more about Equation here brainly.com/question/17202391
Answer: The most obvious advantage is the opportunity to be your own boss. Being in charge and making the important decisions regarding your business can be fulfilling, but it can also be challenging. Control. You choose the work you like to do and that makes the most of your strengths and skills.
Hope this helps :)
Answer:
Communication is the first step.
Explanation:
