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3 years ago

The equation 9 X 3 = 27 is used to find the area. Explain what

Mathematics

1 answer:

Oksana_A [137]3 years ago

6 0

Answer:

In the equation 9 X 3 = 27, each factor stands for:

9 = length
3 = width
27 = area

Step-by-step explanation:

When you must know the area of a terrain or figure, you must know what is the form of that (circle, triangle, rectangle, square, or another figure), because, with this, you can use different formulas of the area, in the case given in the exercise, the formula used is to a rectangle (is the same that a square, but how the length and the width aren't equal, is a rectangle), knowing this the formula is:

Area of a rectangle = length * width

In a rectangle, the length is bigger than the width, by this reason 9 is the length, 3 the width and the result is the area, how you can see below:

Area of a rectangle = 9 * 3
Area of a rectangle = 27

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Read 2 more answers

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damaskus [11]

Answer:

$z=\frac{24-40}{8}=-2$

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Step-by-step explanation:

For this problem we have the following parameters given:

$\mu = 40, \sigma =8$

And for this case we want to find the percentage of lightbulb replacement requests numbering between 24 and 40.

From the empirical rule we know that we have 68% of the values within one deviation from the mean, 95% of the values within 2 deviations and 99.7% within 3 deviations.

We can find the number of deviations from themean for the limits with the z score formula we got:

$z=\frac{X-\mu}{\sigma}$

And replacing we got:

$z=\frac{24-40}{8}=-2$

$z=\frac{40-40}{8}=0$

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3 years ago