The first equation tells you that
. If you substitute this expression for
in the second, we have
![2x-(x+3)=-1 \iff x-3=-1 \iff x=2](https://tex.z-dn.net/?f=2x-%28x%2B3%29%3D-1%20%5Ciff%20x-3%3D-1%20%5Ciff%20x%3D2)
And we can deduce ![y=x+3=2+3=5](https://tex.z-dn.net/?f=y%3Dx%2B3%3D2%2B3%3D5)
You are looking at around 81.5% i assume by shifting the standard deviation by the same amount on both sides the % will not change
i split the normal distribution curve into 8 pieces
.15 +2.35+13.5+34+34+13.5+2.35+.15 34+34+13.5=81.5%
the ones bolded are the sections that u r dealing with
now the standard deviation is only 4400 so these numbers are going to be skewed off to the right a bit however bcus both sides are skewed evenly i believe they balance each other out
im not completely certain of this but still i hope i helped if so give me a brainliest answer i need a few more to move up a rank -J (:
Answer: The mean of the data will decrease.
The median of the data will not change.
The range of the data will decrease.
Answer:
9 : 7, or 9/16 to 7/16
Step-by-step explanation:
We know that there are 9 blue hats.
We know there are 7 red hats.
This is a 9 : 7 ratio.
In fraction form, we must find the total ratio, use that as the denominator, then take the seperate amounts, such as bluei adn red hats, and use that as the numerator:
9+7=denominator
denominator = 16
Blue hats = 9
Ratio of red = 9/16
Red hats = 7
Ratio of red = 7/16
Hope this helps!
Answer:7/13
Step-by-step explanation:
It would be 7 out of 13 you add all the balls up to get a total of 13 and out of those 13 seven are not white