The perimeter of parallelogram ABCD is 46 inches. What is DA?
2 answers:
ANSWER
EXPLANATION
The perimeter of a parallelogram is given by the formula,
It is the same as that of the rectangle.
We were given that the perimeter is 46 inches. So now we need to determine the length of the parallelogram using the equation
The reason is that, the opposite sides of a parallelogram are equal.
We solve the equation for x to obtain,
This means that,
Dividing through by 5, we obtain,
Meaning the length is
We now plug in
into
to get,
DA is the width of the parallelogram, therefore
EXPLANATION
The perimeter of a parallelogram is given by the formula,
It is the same as that of the rectangle.
We were given that the perimeter is 46 inches. So now we need to determine the length of the parallelogram using the equation
The reason is that, the opposite sides of a parallelogram are equal.
We solve the equation for x to obtain,
This means that,
Dividing through by 5, we obtain,
Meaning the length is
We now plug in
into
to get,
DA is the width of the parallelogram, therefore
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Answer:
Step-by-step explanation
The relative error is the absolute error divided by the absolute value of p. for an approximation p*, the relative error is
r = |p*-p|/|p|
we want r to be at most 10⁻³, thus
|p*-p|/|p| ≤ 10⁻³
|p*-p| ≤ |p|* 10⁻³
therefore, p*-p should lie in the interval [ - |p| * 10⁻³ , |p| * 10⁻³ ], and as a consecuence, p* should be in the interval [p - |p| * 10⁻³ , p + |p| * 10⁻³ ]