Call chocolate 'c' and mint 'm'.
-> c=3m/5.
Since c+m= 7 (lbs)
->3m/5 + m = 7
Solve m= 35/8 ~4.4 lbs
->c= 2.6 lbs
It is the first one for sure! Hope this helps
The standard deviation is 4 games
A standard deviation (or σ) is a measure of how dispersed the facts are in relation to the mean. Low general deviation method statistics are clustered around the imply, and excessive trendy deviation indicates facts are more unfold.
Don't forget the statistics set: 2, 1, 3, 2, four. The mean and the sum of squares of deviations of the observations from the mean will be 2. 4 and 5.2, respectively. as a consequence, the same standard deviation could be √(5.2/5) = 1.01.
In data, the same old deviation is a degree of the quantity of variant or dispersion of a set of values. A low preferred deviation indicates that the values tend to be close to the mean of the set, while a high general deviation shows that the values unfold out over a much broader variety.
Given that,
mean = μ = 18
standard deviation = Σ = 6
n = 2
μ x = μ = 18 games
√ x = Σ / √ = 6
√2 = 4 games
Learn more about standard deviation here brainly.com/question/12402189
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Answer:
(3/4,5/2)
Explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
