Answer:
3
Step-by-step explanation:
Answer:
57.5
Step-by-step explanation:
20x - (10 x 110) = 50
=> 20x - 1100 = 50
=> 20x = 1150
=> x = 1150/20
=> x = 115/2
=> x = 57.5
Answer:
So the answer for this case would be n=2663 rounded up to the nearest integer
Step-by-step explanation:
We have the following info:
margin of error desired
the standard deviation for this case
The margin of error is given by this formula:
(a)
And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is
. And for this case would be
, replacing into formula (b) we got:
So the answer for this case would be n=2663 rounded up to the nearest integer
Answer:
140,556 miles
Step-by-step explanation:
CAN I BE BRAINS
Answer:
Neither parallel nor perpendicular
Step-by-step explanation:
To tell whether two lines are parallel or perpendicular, look at their slopes.
Parallel lines will have the same slope. This isn't the case since the first line has a slope of 1 and the second has a slope of -1.
Perpendicular line have slopes that are negative inverses of the other. This also isn't the case for these two lines. Although the slopes have opposite signs, the numbers aren't inverses.
The two lines are neither parallel nor perpendicular.