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Phoenix [80]
3 years ago
9

20% of 55 is what number

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0
20% of 55 is 11

Workingout: 20%/100% = 0.2
                     0.2 x 55 = 11

:)

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<span>The factors of 16 are 1, 2, 4, 8, and 16.</span>
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B 0.05 since the thousandth digit is higher than 5, it needs to be rounded up.
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A family has two cats named Gordo and Flaco. Gordo weighs 15 pounds and Flaco weighs 8 pounds. A cat’s weight is classified as u
Elena-2011 [213]

Answer:

Gordo's weight = 15 pounds

It is outside the healthy weight range and is in the top 5% of weights of cats.

Gordo's weight makes Gordo unhealthy.

Step-by-step explanation:

μ = mean weight = 9.5 pounds

σ = standard deviation = 1.5 pounds

This is a normal distribution problem

We first calculate the limit of the bottom 5% of weights

Let the z-score for this limit be z'

P(z < z') = 0.05

From the normal distribution table,

z' = -1.645

And the limit for the top 5% which is z" = 1.645.

The weight that corresponds to these scores are then calculated.

Standardized scores are given as

z = (x - μ)/σ

So,

z' = (limit for the bottom 5% - μ)/σ

-1.645 = (limit for the bottom 5% - 9.5)/1.5

limit of the bottom 5% = (-1.645)(1.5) + 9.5 = 7.033 pounds

z" = ( (limit for the top 5% - μ)/σ

1.645 = (limit for the top 5% - 9.5)/1.5

limit of the bottom 5% = (1.645)(1.5) + 9.5 = 11.968 pounds

Therefore the healthy weight range for cats is (7.033 < x < 9.968)

Gordo's weight = 15 pounds

It is outside the healthy weight range and is in the top 5% of weights of cats.

Gordo's weight makes the cat unhealthy.

Flaco's weight = 8 pounds

Flaco's weight lies in the healthy weight range for cats. Hence, Flaco is a healthy cat.

8 0
2 years ago
What do you know about the slope when X2 - X1 = 0 ?
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Answer:

slope is undefined

Step-by-step explanation:

Using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

If x₂ - x₁ = 0

Since division by zero is undefined then the slope of the line is undefined

This applies to a vertical line parallel to the y- axis

4 0
3 years ago
Which expression represents the distance between −14.6 and −5.2 on the number line? Drag and drop the correct expression into th
musickatia [10]

Answer:

The expression that represent the distance between -14.6 and -5.2 is the value absolute of the subtraction of the two points.

Then the distance is d=|-5.2-(-14.6)|=|-5.2+14.6|=9.4

3 0
3 years ago
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