1. Rate of change is 2/5
2. Rate of change is 1.5
3. Rate of change is -1x
4.Rate of change is 1/4
17.4.....add all the numbers and divide by 10
Answer:
89.008
Step-by-step explanation:
z = (x– mean)/ standard deviation
x = z * standard deviation + mean
Now, z value for the top 4% of the exams (which is the same as getting a score below the 96%) has to be found using a z table.
In this case z = 1.751
x = 1.751 * 8 + 75
x = 89.008
1) What is the mean of the data set:
The best plot is the dot plot. Sum the values of each dot and divide by the number of dots.
2) What is the median of the data set:
Use the box plot. The median is the value in the middle of the rectangle. That is 8.
3) What is the interquartile range:
Use the box plot. The interquartile range is the length of the rectangle. That is 10 - 6 = 4
4) How many members use the facility 10 days a month:
Use the box plot. The answer count how many dots are over the number 10. That is 2.
X = t - 3 is also -t = -x - 3 or t=x+3
Substitute it in
y=2/t+5
y=2/(x+3)+5
Let y=0 to solve for x
0=2/(x+3)+5
-5= 2/(x+3)
-10=x+3
-7=x
Now solve for t
t = x+3
t = (-7)+3
t = -4
Now we can solve for y
y = 2/(-4)+5
y = -0.5+5
y = 4.5
To check
4.5 = 2/(-4) + 5
4.5 = -0.5 + 5
4.5 = 4.5
-7 = -4 - 3
-7 = -7
Therefore
x = -7
y = 4.5
t = -4
