How do you solve the following system of equations by eliminating the y-values? I've already solved it by eliminating the x-valu
es so I know the answer is (-9/2, -10) but I'm having trouble getting that answer by eliminating the y-values.
1 answer:
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a) 20.9
The mean is calculated by adding up the scores and dividing the total by the number of scores, it is also called the average.
First, we can count and see there are 11 players (makes sense for a football team). Adding up the ages gives us 19 + 19 + 20 + 20 + 20 + 21 + 22 + 22 + 22 + 22 + 23 = 230. Divide by 11 and we get a mean of of about 20.9!
b) 30
To figure this out, we will set up an equation that looks like this:
And now we will solve:
[multiply both sides by 12] 230 + x = 264
[subtract 130 from both sides] x = 30
So the age of the new player should be 30!
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
We can see that window is in shape of rectangle. So the length of the required wood to frame window is equal to the perimeter of rectangle.
SO the length of rectangular window is
feet.
Width of the rectangular window is =
feet.
In general parameter of rectangle is =
So the parameter of window is =
So the required length of wood to frame window is = 28.834 feet
SO the length of rectangular window is
Width of the rectangular window is =
In general parameter of rectangle is =
So the parameter of window is =
So the required length of wood to frame window is = 28.834 feet