Answer:
20 eggs
Step-by-step explanation:
If Lena has 70 eggs and gives 50 to her friend we will have to subtract.
70 - 50 = 20
Lena has 20 eggs left.
Have a wonderful day! :)
Answer:
On the average, estimates will be either be 0.2 meters too short or too long.
Step-by-step explanation:
Standard deviation is normally used to show how the actual value of a variable in a given sample deviates from the mean or average value of the sample. The deviation could be slightly more or less than the average value by the value of the standard deviation. Therefore, in this question, the standard deviation shows that the estimates could be 0.2 m short or more than the mean.
Same as handshake problem.
Each of n persons plays against n-1 persons for a total of n(n-1)/2 games.
The division by 2 is necessary to avoid double counting the game A vs B and B vs A.
For n=8, then number of games played in the first round is 8(8-1)/2=28 games.
Answer:
A is 2.5, B is 5, and C is 6.
Step-by-step explanation:
Hope this helps :D
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