1/6 percussion
1/3 wood winds = 2/6 (which is twice as many as percussion)
1/2 brass = 3/6 (which is three times as many as percussion)
So percussion = 3
wood winds = 6
brass = 9
all together = 3 + 6 + 9 = 18
Using elimination method to find y
3x - 4y = -15 (multiply 4)
4x + 3y = 5 (multiply 3)
------------------------------------
12x - 16y = -60
12x + 9y = 15
--------------------- - (substract)
-25y = -75
y = 3
Using subtitution method to find x
3x - 4y = -15
3x - 4(3) = -15
3x - 12 = -15
3x = -3
x = -1
The solution (-1,3)
A is the answer because it doesn’t have a repeating x value
The answer is D.) b-g/w + 1 = t
The numerical values of the mean and standard deviation are 4 and 1.55, respectively
<h3>The
numerical value of the
probability that x = 6. </h3>
The given parameters are:
n = 10
π = 0.4
The probability is then calculated as:

So, we have:

Apply the combination formula

So, we have:

Evaluate
P(6) = 0.1115
Hence, the numerical value of the probability that x = 6 is 0.1115
<h3>The numerical values of the mean and standard deviation </h3>
The mean value is:

This gives


The standard deviation value is:

This gives


Hence, the numerical values of the mean and standard deviation are 4 and 1.55, respectively
Read more about mean and standard deviation at:
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