Answer:
30 degrees
Step-by-step explanation:
90 + 60 + x = 180
150 + x = 180
-150 -150
x = 30
Answer:
c
Step-by-step explanation:
180-(90+40)=50°
90° because it is a right angle
Answer:
31,536,000s on a 365 day year
31,622,400s on a leap year
There are 86,400 seconds in one day; multiply that by the number of days.
seconds per day x number of days
Answer:
21, 144, 12
Step-by-step explanation:
Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.
Let X be the distance in yard.
i.e. each entry of x is multiplied by 3.
New mean variance std devition would be
E(3x) = 
Var (3x) = 
Std dev (3x) = 
Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9