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Answers
Answer:
answer:- 13 Average=
No. of observations
Sum of all observations
The mean of five observation is 89
\begin{gathered}89 = \frac{\text{Sum of 5 observations}}{5} \\89 \times 5 =\text{Sum of 5 observations} \\445=\text{Sum of 5 observations}\end{gathered}
89=
5
Sum of 5 observations
89×5=Sum of 5 observations
445=Sum of 5 observations
One of the observation is wrongly taken out as 42 in a state of 24.
New sum = 445-42+24=427
\text{New mean} = \frac{427}{5}New mean=
5
427
New mean = 85.4
Hence The correct mean is 85.4
answer:-14 . 45°
answer:-2πr²
Answer:
q14 Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees. Thus the angle which is equal to its complement is 45 deg
q15 I think option b
q13 option a
hope it helps !!!