Answer:
Option B) 9.1
Step-by-step explanation:
We are given the following in the question:
Average score = 490.4
Standard deviation = 63.7
Sample size, n = 49
Formula:
Putting values, we get,
Standard error =
Thus, the correct answer is
Option B) 9.1
Answer:
4 and 5
Step-by-step explanation:
Make a system of equations:
x+y=9
x-y=-1
x=9-y
9-y-y=-1
9-2y=-1
-2y=-10
y=5
Since y=5, x must be 4 since 4+5=9 and 4-5=-1
Hope this helped!
Answer:
Step-by-step explanation:
The given function is
Observe that, the first two factors are from difference of two squares.
We expand the brackets using the distributive property to obtain;
The above function is now in standard form, since the terms are arranged in descending powers of 
.
Phil gets x dollars, but before he gets x dollars, he needs to pay 100 dollars to enter the tournament. Therefore the net winning is not x dollars but you should substract 100 dollars from x.
So, the expression of the net winning will be x-100
Answer:
The slope is -3
Step-by-step explanation:
This is so because the line in pointing down, leading to the fact that the slope is negative, and rise over run is 3/1......
Therefore, the slope of the line is -3
