Answer:
6 seconds
Step-by-step explanation:
-12 m is the displacement
Distance covered is 12m
Distance : time
2m : 1 sec
12m : t sec
2/1 = 12/t
t = 6 sec
500 milligrams are in one half gram
Answer:
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Step-by-step explanation:
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Answer:
The value of the third reading is 80 F
![x=80^0F](https://tex.z-dn.net/?f=x%3D80%5E0F)
Explanation:
Let x represent the value of the third reading.
The average of a set of data equals the sum of all the data divided by the number of data;
![\text{Average =}\frac{sum\text{ of data}}{\text{number of data}}](https://tex.z-dn.net/?f=%5Ctext%7BAverage%20%3D%7D%5Cfrac%7Bsum%5Ctext%7B%20of%20data%7D%7D%7B%5Ctext%7Bnumber%20of%20data%7D%7D)
Given;
Average = 80 F
Sum of data = 65+85+x+90
Number of data = 4
substituting we have;
![80=\frac{65+85+x+90}{4}](https://tex.z-dn.net/?f=80%3D%5Cfrac%7B65%2B85%2Bx%2B90%7D%7B4%7D)
solving for x;
![\begin{gathered} 80=\frac{65+85+x+90}{4} \\ 80\times4=65+85+x+90 \\ 320=65+85+x+90 \\ 320=240+x \\ 320-240=x \\ x=80 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%2080%3D%5Cfrac%7B65%2B85%2Bx%2B90%7D%7B4%7D%20%5C%5C%2080%5Ctimes4%3D65%2B85%2Bx%2B90%20%5C%5C%20320%3D65%2B85%2Bx%2B90%20%5C%5C%20320%3D240%2Bx%20%5C%5C%20320-240%3Dx%20%5C%5C%20x%3D80%20%5Cend%7Bgathered%7D)
Therefore, The value of the third reading is 80 F