42 is 21% of 200. This is because 200*0.21 = 42.
Answer:
30 degrees
Step-by-step explanation:
add the two together then subtract 180
The sum of interior angels of a pentagon is 550
Answer:

Step-by-step explanation:
From the question we are told that:
Sample size 157
Sample mean



Generally the equation for Standard deviation is mathematically given by



Therefore


