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
For a monopolist, if price is above average total cost, the monopolist is:
- Earning positive or economic profit
<h3>What is positive profit?</h3>
A positive profit is earned when the revenue being made surpasses what is normal on the competitive scale. The cost of production is covered and surpassed in this case.
So when the monopolist fixes his price above the total cost, he will earn a positive profit.
Learn more about positive profit here:
brainly.com/question/1305349
#SPJ1
We need a bit more context lol
Answer: They had long days, over a one-third mile. People built from both ends and from the middle to the tunnels.
Explanation: from edge 2022