Answer:
Step-by-step explanation:
Given:
0.612 0.523 0.606 0.631 0.584 0.592 0.644 0.597 0.639 0.607 0.564 0.673
Required
Calculate the sample standard deviation
First, calculate the mean
The sample standard deviation is then calculated using:
So, we have:
-- approximated
Answer:
∠ S = 151°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° ( n - 2) ← n is the number of sides
Here n = 5, thus
sum = 180° × 3 = 540
Sum the interior angles and equate to 540
10x - 3 + 5x + 2 + 7x - 11 + 13x - 31 + 8x - 19 = 540, that is
43x - 62 = 540 ( add 62 to both sides )
43x = 602 ( divide both sides by 43 )
x = 14
Thus
∠ S = 13x - 31 = 13(14) - 31 = 182 - 31 = 151°
Answer:
a) 2/5
b) 40%
Step-by-step explanation:
Tina had $10.
a)
10-6=4
4/10=2/5
b)
2/5x20/20=40/100
=40%
Hope this helps :)
Answer:
3,444
Step-by-step explanation:
The art teacher had 1321 pipe cleaners for a project
She used 477 with the fourth age
A parent donated 2,600 pipe cleaners
Therefore the number of pipe cleaners she have left can be calculated as follows
= 1321-477+2600
= 844 + 2600
= 3,444