Answer:
the missing fence length = 2a² + 18
Step-by-step explanation:
3a²+15a+9 = (a²-7) + (10a-2) + 5a + ? = a² + 15a -9
? = (3a²+15a+9) - (a² + 15a -9) = 2a² + 18
$106 dollars since 6% of 100 is 6 and u add 6 dollars to 100 and u get $106
Answer:
The standard deviation of the sample mean decreases from 1.43 to 0.5 as n increases from 6 to 49.
Step-by-step explanation:
The standard deviation of the sample mean is given by the following formula:

In which
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:

How is the standard deviation of the sample mean changed when the sample size is increased from n=6 to n=49?
n = 6

n = 49

The standard deviation of the sample mean decreases from 1.43 to 0.5 as n increases from 6 to 49.
Answer:
x^2+6x+5
Step-by-step explanation:
If the zeros are -1 and -5, then the equation factored is (x+1)(x+5). If you multiply that out you get x^2+6x+5.