The answer is 38, because if you take away the 15 he bought afterwards (34-15) you get 19, and then since he sold half his collection you would double that (19×2) and that's 38.
The median is the middle score, it is also the average of the two middle scores when total number is even.
original 3 scores: 89, 90, 95 ----> median = 90
with final score: 89,90,X,95 ----> median = 91.5
(90+x)/2 = 91.5
90+x = 183
x = 93
Final score was a 93.
Answer:
The variance of the temperatures of the 10 day period must be at least zero.
Step-by-step explanation:
The variance is the expectation of the squared deviation of a random variable from its mean. It measures how far a set of numbers are spread out from their average value.
Its unit of measure corresponding to the square of the unit of measure of the variable. In this case, the variance of the temperatures is expressed in (°C)². The variance has a minimum value of 0.
Since the variance is squared, it will always have values greater than zero.
To find the perimeter of any shape, you find the sum of their side lengths.
In this case, this triangle has side lengths of 1.197, 0.764, and 1.74.
Add these, and the sum is your answer.
1.197 + 0.764 + 1.74 = 3.701
Therefore 3.701 is the correct answer :)
