Answer: The answer is A, 132 units
Step-by-step explanation:
Answer:
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Step-by-step explanation:
( See the attached picture )
Now,
Mean =
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In the case of repeated data , follow the steps given below to calculate the mean :
- Draw a table with 3 columns
- Write down the items ( x ) in ascending or descending order in the first column and the corresponding frequencies in the second column.
- Find the product of each item and it's frequency ( fx ) and write in the third column.
- Find the total of f column and fx column.
- Divide the sum of fx by the sum of f ( total number of items ) , the quotient is the required mean.
Hope I helped!
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Answer:
x= 9/2
Step-by-step explanation:
Answer:
April took out a loan of $600 and paid it back with simple interest of $60 after 5 years. The formula to calculate interest is given the principal and the time and the interest rate is . For this problem we have to find the interest rate given . To archive that , we can just solve the equation making the interest rate the subject of the formula as shown below,
I= Prt
=> r= I/Pt
=> r= 60/600x5 = 1/50
The interest rate is 1/50 or 0.02 as a decimal. The interest rate is 2% as a percentage.