Answer:
14
Step-by-step explanation:
The distance between two points is given by
d = sqrt( (y2-y1) ^2 + (x2-x1)^2)
= sqrt((-9-5)^2 + (-3- -3)^2)
= sqrt(( -14)^2 +(-3+3)^2)
= sqrt((-14)^2 +0)
= sqrt((14)^2)
= 14
Answer:
3.92 approximately 4
Step-by-step explanation:
let us first find angle at F
40⁰+50⁰+F= 180 (sum of angles in a triangle)
90⁰+F= 180⁰
F= 180⁰-90⁰
F = 90⁰
using sine rule
3/sin 50 = x/sin 90
3/0.7660= x/ 1
0.7660x=3
x= 3/0.7660
x= 3.92 approximately 4
Answer:
3.7 Miles
Step-by-step explanation:
Add all of the miles, then subtract it by 20.
Answer:
80
Explanation:
The mean of the distribution of sample means always target the population mean. What this line tells is that whatever the population mean will be, the mean of the distribution of sample means will be same. Since the population mean is 80, the mean of distribution of sample means will also be 80.
However, the standard deviation of the sample distributions is different and is equal to the population standard deviation divided by square root of sample size. So in this case the standard deviation of distribution of sample means will be 6 .
