Given:
To find:
The variance. of combined set.
Solution:
Formula for variance is
...(i)
Using (i), we get
Similarly,
Now, after combining both sets, we get
Therefore, the variance of combined set is 15.4.
we know that
thus in the question ,
therefore , m∠B = 60°
hope helpful~
Answer:
Si
Step-by-step explanation:
$6.96 $2.9 x 2.4=$6.96