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vredina [299]
3 years ago
8

What is the mean of the set of numbers, {–11, 22, –2, –3}? A. –6.5 B. –1.5 C. 1.5 D. 6.5

Mathematics
2 answers:
tekilochka [14]3 years ago
7 0
\dfrac{-11+22+(-2)+(-3)}{4}=\dfrac{22-16}{4}=\dfrac{6}{4}=\fbox{1.5}\to\fbox{C.}
german3 years ago
5 0
Since there are four numbers in the set, their mean (average) is calculated by dividing by four their sum. 
  Sum = -11 + 22 + -2 + -3 = 6
Dividing the sum by four gives an answer which is equal to 1.5. Thus, the answer is letter C. 
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Here is a diagram of a black circle inside a white square and a diagram of a small grey square inside a white square.
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Divide through by 16x²

Ratio = π : 4 : 2

Hence, the ratio of the area of the black circle to the area of the white square to the area of the gray square is π : 4 : 2

Read more about areas at:

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