3 years ago

A Rectangular Room has a length of 3 more than its width. The perimeter of the room is 90. What is the width of the room?

Mathematics

1 answer:

nignag [31]3 years ago

4 0

The answer to your question is 21

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3 years ago

Convert the decimal below into a rational number.

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In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older

earnstyle [38]

Answer:

Step-by-step explanation:

In the past, mean of age of employees

i.e. $\mu = 40$

Recently sample was taken

n = sample size = 60

Mean of sample = 45

Std dev of sample s = 16

$H_0: \bar x = 40\\H_a: \bar x >40$

(Right tailed test)

Since only population std deviation is known we can use t test only

Std error = $\frac{s}{\sqrt{n} } \\=\frac{16}{\sqrt{61} } \\=2.049$

Mean difference = 45-40 =5

Test statistic t= $\frac{5}{2.049} \\=2.441$

df = 60

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The mean age has increased.

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3 years ago

The scatterplot shows the relationship between the number of calories and the number of grams of fat in food items at a fast-foo

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2 years ago

Any of these questions please

maw [93]

Answer:

See the explanation below.

Step-by-step explanation:

$f(t)=21020\left(1+0.012\right)^t\\\\f(t)=21020\left(1.012\right)^t\\$

Starting from $t=2002$

By putting $t=2015-2002=13$ we have:

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3 years ago