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3 years ago

A 3.5ft by 5.5ft mirror is placed in a wooden frame. What is the area of the frame?

Mathematics

2 answers:

Bingel [31]3 years ago

7 0

3.5*5.5=19.25
The formula to find the area is the length times width

Thepotemich [5.8K]3 years ago

3 0

Answer:

19.25 ft^2

Step-by-step explanation:

According to the dimension we can assume the mirror is a rectangle. The area of a rectangle is the length timest he width. The length is 5.5ft and the width is 3.5ft.

$=5.5\cdot{3.5}=19.25$

The area of the mirror is 19.25 ft^2

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Answer:

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Step-by-step explanation:

We are given that the amount a Niffler can hold in their pouch is approximately normally distributed with a mean of 25 pounds of shiny objects and a standard deviation of 6.8 pounds.

Let X = <u><em>amount a Niffler can hold in their pouch</em></u>

So, X ~ Normal( $\mu=25,\sigma^{2} =6.8^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

where, $\mu$ = population mean = 25 pounds

$\sigma$ = standard deviation = 6.8 pounds

Now, the probability that a Niffler can hold more than 32 pounds of shiny objects in their pouch is given by = P(X > 32 pounds)

P(X > 32 pounds) = P( $\frac{X-\mu}{\sigma}$ > $\frac{32-25}{6.8}$ ) = P(Z > 1.03) = 1 - P(Z $\leq$ 1.03)

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<em>The above probability is calculated by looking at the value of x = 1.03 in the z table which has an area of 0.8485.</em>

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Hence, the probability that a Niffler can hold more than 32 pounds of shiny objects in their pouch is 0.1515.

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3 years ago