The scale is likely to show the mass is either 270.9g or 245.1g
Step-by-step explanation:
Actual mass = 258g
Percent error = 5% = ±0.05
Mass shown by scale = Actual mass*percent error
Therefore,
Mass shown by scale = 258+12.9 , Mass shown by scale = 258-12.9
Mass shown by scale = 270.9g , Mass shown by scale = 245.1g
The scale is likely to show the mass is either 270.9g or 245.1g
Keywords: error, percentage
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Answer:
= 18
Step-by-step explanation:
=
Cross multiply
5 * c = 30 * 3
5c = 90
Divide both sides by 5
c = 90/5
c = 18
Answer:
.
Step-by-step explanation:
The given series is,
When we substitute , we get the first term, which is
This implies that,
.
The common ratio is
The finite geometric sum is given by the formula,
.
Since there are 9 terms, we find the sum of the first nine terms by putting in to the formula to get,
.
.
.
.
.
.
.
The correct answer is B
