All angles of a triangle *always* equal to 180*. R=120 and two angles on a flat line also equal to 180. So, *180-120=60*. So *60+60+60*, all the angles of the triangle, equals to 180. So angle x=60.
7 & 13 have an odd product.
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Answer:
C. The coefficient of variation is a measure of relative dispersion that expresses the standard deviation as a percentage of the mean, for any data on a ratio scale and an interval scale
Step-by-step explanation:
Th Coefficient of Variance is a measure of dispersion that can be calculated using the formula:

Where
is the Standard Deviation
and
is the sample mean
From the formula written above, it is shown that the Coefficient of Variation expresses the Standard Deviation as a percentage of the mean.
Coefficient of variation can be used to compare positive as well as negative data on the ratio and interval scale, it is not only used for positive data.
The Interquartile Range is not a measure of central tendency, it is a measure of dispersion.
3 ( x + 1) = 2 ( x + 11) Use the Distributive Property
3x + 3 = 2x + 22 Subtract 2x from both sides
x + 3 = 22 Subtract 3 from both sides
x = 19