Well since the first expression says 8x(40+7) the answer would be 40 that is missing
Since your splitting 47 into 40 and 7 and multiplying both of them by 8 the answer would be 40
Answer:
1020 miles
Step-by-step explanation:
m = (240 * x) + 300
m = (240 * 3) + 300
m = 720 + 300
m = 1020
We kind of need to see the graphs to decide.
but the function is any graph that is completely straight and goes through the center (0,0)
Answer:
Step-by-step explanation:
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Let X the random variable that represent the Student scores on exams given by a certain instructor, we know that X have the following distribution:

The sampling distribution for the sample mean is given by:
The deduction is explained below we have this:
Since the variance for each individual observation is
then:
And then for this special case:
We are interested on this probability:
And we have already found the probability distribution for the sample mean on part a. So on this case we can use the z score formula given by:
Applying this we have the following result:
And using the normal standard distribution, Excel or a calculator we find this: