Answer: Mean: 9
MAD: 46
Step-by-step explanation:
I will show u how to work out the mean
and the mad so u know
MEAN:
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
MAD:
1) To find the mean absolute deviation of the data, start by finding the mean of the data set.
2 )Find the sum of the data values, and divide the sum by the number of data values.
3) Find the absolute value of the difference between each data value and the mean: |data value – mean.
MARK THIS AS THE BRAINLIEST PLEASE
Answer:
D)
Step-by-step explanation:
Not sure but hope this helps. ;)
- The slope and y-intercept of this line represented by the linear equation are 0 and -2 respectively.
- The linear relationship between the solutions (points) of the line values is that the points on the y-axis are constant while the points on the x-axis increased from left to right.
<h3>How to graph the line?</h3>
Mathematically, the standard form of the equation of a straight line is given by;
y = mx + c
Where:
In order to graph this line using the slope and y-intercept, we would have to express the given equation in the standard form as follows:
y + 2 = 0
y = -2
Therefore, the graph of the given equation is an horizontal line with y-intercept at -2
By critically observing the graph of the given equation, we can logically deduce that the linear relationship between the solutions (points) of the line values is that the points on the y-axis are constant while the points on the x-axis increased from left to right.
<h3>How to prove that the points are solutions of the linear equation?</h3>
Slope, m = Δy/Δx
Slope, m = (-2 + 2)/(6 - 2) = 0.
At point (2, -2), we have:
y = mx + c
y = 0(2) - 2
y = 0 - 2
y = -2 (Proved).
At point (6, -2), we have:
y = mx + c
y = 0(6) - 2
y = 0 - 2
y = -2 (Proved).
Read more on slope and y-intercept here: brainly.com/question/17920127
#SPJ1
With the information given we can wirte down 2 different equations where:
x = How many Fictoon books there are
A nd y = How many non-fiction books there are :
#1) x + y = 312
( The total of the books is 312 )
#2) x = 11y
(He has 11 times as many firction books as he has non-ficton books)
Now what we need to do is to isolate one the variables ( x or y ) , get its value and apply to one the equations to get the other variable's value:
We can do that by the property of substitution:
If x = 11y
then x + y = (11y) + y = 12y
If x + y = 312
and x + y = 12y
then 12y = 312
Now with the equation 12y = 312 , we can isolate y by dividing both sides of the equation by 12 :
12/12y = 312/12
y = 26
What that means : Mark has 26 non-fictional books.
Now that we have the value of y , we can find the value of x by plugging y to one of the equations :
x + y = 312
or
x = 7y
( I will do both , but you dont need to )
x + y = 312
Plugin 26 for y :
x + 26 = 312
Shift 26 to the other side of the equation by subtracting both sides of the equation by 26:
x + 26 - 26 = 312 - 26
26 - 26 cancel out , so we end up with :
x = 286
Second Equation :
x = 11y
Plugin 26 for y:
x = 11 × 26
x = 286
Awnser : Mark has 286 fictoon books and 26 non-fiction !
I hope you understood my brief explanation. And please consider marking this awnser as Branliest. Thank you ! :)
Answer:
d) 9 years
Step-by-step explanation:
let present age as 'x'.
then, x=2x-3(x-6)
x=2x-3x+18
x= -x+18
2x=18
x=18/2
x=9