Which of the following algebraic expressions represents the sum of 7 and one-fifth of x?
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Answer
Find out the what is the percent error in the measurement, to the nearest tenth of a percent .
To prove
Formula
Where error = | Approx - Exact |
As given
Karen measures the width of a garden plot and records that it is 44.25 meters. Its actual width is 45.5 meters.
Approx value = 44.25 meters
Actual value = 45.5 meters
error = | 44.25 - 45.5 |
= |-1.25|
= 1.25
Put in the formula
Percentage error = 2.7%
Therefore the percentage error is 2.7% .
Area of a circle (formula) = 
r²
=(3)²
=9 (using 3.14 as )
=28.26 m²
=(3)²
=9
=28.26 m²