You will not invited
Mean is best measure of average.
Given:
Class rank is at least = 90th percentile
Rank 30 out of 128 student
Find:
1. Invited for membership or not
2. Best measure of average
Computation:
Rank in total = [(100 - Percentile)(Total students)]/100
30 = [(100 - Percentile)(128)]/100
3000 = [(100 - Percentile)(128)]
23.4375 = 100 - Percentile
Percentile = 100 - 23.4375
Percentile = 76.5625
Since Percentile smaller than 90, So, you will not invited to membership
Mean is best measure of average.
Learn more:
brainly.com/question/6033034?referrer=searchResults
I assume you mean
, not
, which is not irrational.
Notice that
. This means
.
Answer:
C
Step-by-step explanation:
2 (20)=40
70-40=30
30/2 = 15 actual width of both sides
P= 2l + 2w
We can solve for both x and y of System A and B to compare the values of x.
System A. Multiply by 4 the first equation and add both equations,
12x + 8y = 12
+ -2x - 8y = -1
We will be left with equation,
10x = 11
The value of x is 11/10
System B. Multiply the first equation by -2 and add the equations,
2x + 28y = -2
+ -2x - 8y = -1
We will be left with 20y = -3. Substitute the value of y to any of the equations. This gives a value of x equal to 11/10.
The answer therefore is that both systems will have the same value of x's.
Hey!
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Prefect Pipes: 120 + 40 = $160 (y-intercept)
No Leaks Here: 50 + 60 = $110 (y-intercept)
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Hour #1:
Prefect Pipes: 160 + 40 = $200
No Leaks Here: 110 + 60 = $170
Hour #2:
Prefect Pipes: 200 + 40 = $240
No Leaks Here: 170 + 60 = $230
Hour #3:
Prefect Pipes: 240 + 40 = $280
No Leaks Here: 230 + 60 = $290
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$280 < $290
After 3 hours Perfect Pipes is less expensive than No Leaks Here!
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Hope This Helped! Good Luck!