The mean is the sum of all 12 numbers divided by 12, which is 578.25 ~ 578.3. The variance is calculated by subtracting each score from the mean, squaring, and adding all such squares. Then divide by the number of terms (12) to get 68572.35. Take the square root to get the standard deviation, which is 261.9. So the correct answer is B.
Answer:
2x - 18
$3,382
Step-by-step explanation:
x = number of dollars gained last month
this month:
twice the amount = 2x
minus $18 = 2x - 18
x = 1,700
2x - 18
2(1700) - 18
3,400 - 18
$3,382
1/2 is equal to 50%, 3/4 is equal to 75%, and 7/8 is equal to 87.5 percent. Therefore, the order is 1/2, 3/4, and then 7/8.
A straight line is 180. To find the angle of b, you minus 39 from 180.
180-39=141
The answer is b=141
9
16x9 equals 144 so 144/9 would be 16