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:
In uniform circular motion, the speed remains constant while the direction of the object changes. This means the object experiences an acceleration toward the center of the circle, which is known as centripetal acceleration.
Explanation:
Okay what is the question :)
This data gives the length, in inches, of several nails. length (in.): 12, 516, 18, 12, 38, 516, 516, 316, 516, 18 create a line
Tema [17]
Answer:this is what my test looks like
Explanation:
hope this helps pls give me points byee
