Answer:
Original price of bicycle = $864
Step-by-step explanation:
Given:
Rate of tax = 20%
Price pay by Mathew = $1,080
Find:
Original price of bicycle
Computation:
Original price of bicycle = Price pay by Mathew[1 / (1-20%)]
Original price of bicycle = 1,080[1 / (1-20%)]
Original price of bicycle = 1,080[1 / (1-0.2)]
Original price of bicycle = 1,080[1 / (0.8)]
Original price of bicycle = 1,080[1.25]
Original price of bicycle = 1,080[1.25]
Original price of bicycle = $864
Answer:
a=108
Step-by-step explanation:
180x3=540
540/5=108
a=108˚
The data given as a whole would be called ungrouped data. Now to get the variance, you will need the formula:
s^2= <u>Σ(x-mean)^2</u>
n
x = raw data
mean = average of all data
n = no. of observations
s^2 = variance
Now we do not have the mean yet, so you have to solve for it. All you need to do is add up all the data and divide it by the number of observations.
Data: <span>90, 75, 72, 88, 85 n= 5
</span>Mean=<u>Σx</u>
n
Mean = <u>90+75+72+88+85 </u> = <u>410</u> = 82
5 5
The mean is 82. Now we can make a table using this.
The firs column will be your raw data or x, the second column will be your mean and the third will be the difference between the raw data and the mean and the fourth column will be the difference raised to two.
90-82 = 8
8^2 =64
75-82 = -7
-7^2 =49
72-82 = -10
-10^2=100
88-82=6
6^2 = 12
85-82=3
3^2=9
Now you have your results, you can now tabulate the data:
x mean x-mean (x-mean)^2
90 82 8 64
75 82 -7 49
72 82 -10 100
88 82 6 36
85 82 3 9
Now that you have a table, you will need the sum of (x-mean)^2 because the sigma sign Σ in statistics, means "the sum of."
64+49+100+36+9 = 258
This will be the answer to your question. The value of the numerator of the calculation will be 258.
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