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Lostsunrise [7]
3 years ago
8

Nannette installed a security system in her office for $150 the monthly monitoring fee is $30. So far, Nannette has spent $420 f

or her security system. For how many months has she had the service?
Mathematics
1 answer:
mojhsa [17]3 years ago
5 0

Answer:

9 Months

Step-by-step explanation:420 - 150 = 270

270/30 = 9


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DiKsa [7]

A and D are the correct answers

3 0
4 years ago
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Please explain how to do this.
RUDIKE [14]

Given,

A linear function consisting of 2 terms, one is dependent on time and the other one is independent of time, i.e.,

A = -2.3t - 7

The dependent term -2.3 indicates that the altitude of Mr Mole decreases by 2.3 meters every minute.

At t = 0, A = -2.3(0) - 7 = 0 - 7 = -7.  (Negative sign indicates the value is below the ground level of 0 meter.

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5 0
4 years ago
The table shows the age of some participants in a quiz competition and the number of questions they could answer correctly:
GalinKa [24]

Option first "0; it represents no correlation between x and y" is correct there is no relation between x and y.

<h3>What is correlation?</h3>

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}

 

We have:

Age (years) (x)                                                     15  21   17  22  16  19  18

Number of questions  they could answer(y)    17  17   17  17    17  17  17

As we can see all y values are the same.

n∑y² = 7(2023) = 14161

(∑y)² = 119² = 14161

If we put the value of the above data the value will become undefined.

Thus, option first "0; it represents no correlation between x and y" is correct there is no relation between x and y.

Learn more about the correlation here:

brainly.com/question/11705632

#SPJ1

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2 years ago
Can someone help me please?!
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Step-by-step explanation:

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3 years ago
Which table represents a nonlinear function?
Simora [160]

Answer: c

Step-by-step explanation:

5 0
3 years ago
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