Answer: The answer is A
Step-by-step explanation: You use normalcdf to find the area under a curve. The lower bound (in this case 7) goes first followed by the upper bound, mean, and standard deviation.
Answer:
So the solution would be (1,-2). Remember you can always validate that the solution is correct by plugging it into both equations. But this is the same as the first equation, y=3x-5. Since they are the SAME line they will have infinite solutions.
Step-by-step explanation:
Answer:
1/12 of a gallon per day
Step-by-step explanation:
1/2 or 0.5 divided by 6 is .083333333 or 1/12
Answer:
16/45x-11/12
Step-by-step explanation:
Multiply across
2/15x-30/40-1/6+2/9x=
Get common denominators of like terms
6/45x+10/45x-9/12-2/12=
Combine like terms
16/45x-11/12
If each years cumulate an increase of 1100 dollars, then the cost after 22 years will be the base cost (27000) plus 22 increases (22*1100), for a total of
This relates to arithmetic series as follows: a series is arithmetic if, given a starting element 
, every next element is given by adding a fixed number, called common difference, 
. So, the first terms are
So, you can see that the element 
is obtained by adding n times the common ratio to the starting element.
Since the element 
represents the cost after n years, we are interested in the element
As we had already calculated.
