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PilotLPTM [1.2K]
3 years ago
14

What value of x would make 3x-9 equals to 39

Mathematics
2 answers:
Sliva [168]3 years ago
7 0

Answer:

x=16

Step-by-step explanation:

3 times 16 equals 48 minus 9 equals 39

juin [17]3 years ago
5 0

Answer:

16

Step-by-step explanation:

To solve the equation you must isolate the variable.

3x-9=39

So first, add 9 to both sides

3x-9+9=39+9

3x=48

Then divide both sides by 3

3x/3=48/3

x=16

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Answer:

YZ= 2.8

Step-by-step explanation:

3n+5=8n-9

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14÷5

2.8=n

8 0
3 years ago
Please help
JulsSmile [24]

Answer:

correct

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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The average age of online consumers a few years ago was 24.1 years. As older individuals gain confidence with the​ Internet, it
love history [14]

Answer:

The correct option is (C).

Step-by-step explanation:

A null hypothesis is a sort of hypothesis used in statistics that intends that no statistical significance exists in a set of given observations.  

It is a hypothesis of no difference.

It is typically the hypothesis a scientist or experimenter will attempt to refute or discard. It is denoted by H₀.

Whereas the alternative hypothesis is a contradicting statement tot he null hypothesis. It is denoted by Hₐ.

In this case we need to test whether the average age of online consumers has increased or not.

From previous data we know that the average age of online consumers a few years ago was 24.1 years.

A one-sample mean test can be used to determine whether the mean age has increased or not.

The hypothesis for the test can be defined as follows:

<em>H₀</em>: The average age of online consumers is 24.1 years, i.e. <em>μ</em> = 24.1.

<em>Hₐ</em>: The average age of online consumers is more than 24.1 years, i.e. <em>μ</em> > 24.1.

Thus, the correct option is (C).

6 0
3 years ago
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