Y=-4x+4
-4 is the gradient
So it goes downwards
+4 is the y intercept so where it crosses the y axis
Bottom right one
We know that
800 m-----------> 0.8 km
total distance is--------------> 20 km
if Bob walks 800 m then <span>he travel by bicycle ----> 20 km-0.8 km---> 19.2 km
if 20 km-------------> is 100%
19.2 km-------------> X
X=19.2*100/20---------> X=96%
the answer is 96%</span>
Answer:
9 inches
Step-by-step explanation:
The population is within 6 standard deviations of the mean with a confidence of 99.7 percent, 3 above and 3 below
The standard deviation of the sample mean is equal to the population standard deviation divided by the square root of the sample size
population standard deviation = 36
sample size = 144
standard deviation of the sample mean = 36/ sqrt(144)
=36/12
=3
The margin of error is the number of standard deviations above the mean * the standard deviations
margin of error = 3 * 3
= 9 inches
