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2 years ago

7

In how many ways you can put 2 books on 5 shelves so that

2 answers:

disa [49]2 years ago

6 0

Answer:

Picking any one of the two books there are five shelves to put it on - which makes five ways to place it and for each of those five ways there are four shelves the other book could go such that the two books are not on the same shelf. That's four ways to place a second book for each of the five ways to place the first. That's a total of 20 ways.

Step-by-step explanation:

Brainly? I only need one more to rank up!

Lostsunrise [7]2 years ago

3 0

Answer:

Step-by-step explanation:

rfgg

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A flower shop acquired 80 new customers last year. Costs in the marketing and sales areas were the following:

icang [17]

Using proportions, it is found that the Customer Acquisition Cost was of $1,215.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount.

In this problem, the customer acquisition cost is the spending in sales divided by the number of customers added.

80 customers were added, considering costs of 1200 + 9000 + 87000 = $97,200, hence:

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More can be learned about proportions at brainly.com/question/24372153

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1 year ago

Describe the diagram

Tasya [4]

Answer:

The diagram reprents the 3 sets and the universal set . The shaded portion clearly can be seen as :

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2 years ago

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Fittoniya [83]

Answer: N50°W

Step-by-step explanation:

It should be the opposite: N50°W

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1 year ago

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shusha [124]

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Step-by-step explanation:

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2 years ago

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loris [4]

Answer:

Cos x = $\frac{base}{hypotenuse}=\frac{\sqrt{3} }{2}$

Tan x = $\frac{perpendicular}{base} = \frac{1}{\sqrt{3} }$

Step-by-step explanation:

Sin x = $\frac{perpendicular}{hypotenuse} = \frac{1}{2}$

So, Perp = 1 and hyp = 2

<em>Putting this in Pythagorean theorem to get the base</em>

$c^2 = a^2+b^2$

$a^2 = c^2-b^2$

base ² = 4-1

base² = 3

<em>Taking square root on both sides</em>

Base = $\sqrt{3}$

Now

Cos x = $\frac{base}{hypotenuse}=\frac{\sqrt{3} }{2}$

Tan x = $\frac{perpendicular}{base} = \frac{1}{\sqrt{3} }$

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3 years ago