Answer:
6x
Step-by-step explanation:
4x² - 8x + 8 - x² + 2x - 4 - 3x² + <u>6x</u> = 4
Step-by-step explanation:
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Answer:
102
Step-by-step explanation:
We have the mean (m) 128.5 and the standard deviation (sd) 8.2, we must calculate the value of z for each one and determine whether or not it is an outlier:
z = (x - m) / sd
In the first case x = 148:
z = (148 - 128.5) /8.2
z = 2.37
In the second case x = 102:
z = (102 - 128.5) /8.2
z = -3.23
In the first case x = 152:
z = (152 - 128.5) /8.2
z = 2.86
The value of this is usually between -3 and 3, therefore when x is 102 it goes outside the range of the value of z, which means that this is the outlier.
The x terms add up to 4x and the numbers add up to 12
4x + 12 = 4(x + 3)
Its C