Answer:
A. The mean will increase.
Step-by-step explanation:
The mean is the average of the numbers. You just add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
84 + 75 + 76 + 80 + 48 + 75 = 438
438 / 6 = 73
mean = 73
The outlier is 48, so when you remove it, there will now be only five numbers in the set, and the mean will increase in size.
84 + 75 + 76 + 80 + 75 = 390
390 / 5 = 78
NEW mean (without the outlier) : 78
Since there are 5 cats and 2 dogs, divide cats by dogs for the number.
5/2= 2.5
There are 2.5 times more cats than dogs.
I hope this helps!
~kaikers
Answer:
I think it's B I hope this is the right answer.
To solve this, you’ll first need to solve for their slopes.
The slope for line Q is y2-y1/x2-x1 = -8-(-2)/-8-(-10) = -3
We know that the lines are perpendicular so the negative reciprocal of -3 is 1/3
The equation you get it y = 1/3x + b.
Now you will need to solve for b by substituting in the first ordered pair of line R.
2 = 1/3(1) + b.
Once you solve for b, you should get 5/3 and y = 1/3x + 5/3
Now, to find a, you will need to substitute in 10 from the second ordered pair into x in your new equation.
y = 1/3(10) + 5/3.
Your solution should be 5.
So your answer is: a = 5
266.4 - 8.5 - 24 will give you the answer of 233.9
