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
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Answer:
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To get the most benefit from exercise with the least amount of risk; Moderate intensity with higher frequency is advised.
<h3>Risk and Benefit factors of Exercise</h3>
A couple of exercising methods can be emulated which include;
- Exercising at a high intensity such as sprinting or running.
- Exercising at a moderate intensity such as brisk walking, swimming or cycling.
- Exercising at a low intensity.
However, among the highlighted techniques above, it is advised to exercise at moderate intensity but with higher frequency.
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Answer: i need more point to answer this
Explanation:
