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jarptica [38.1K]
3 years ago
13

Evaluate the expression when x= -4. 2 x + 6x+9​

Mathematics
2 answers:
LuckyWell [14K]3 years ago
8 0

Answer:

x = - 11.25 should be the answer

ExtremeBDS [4]3 years ago
6 0

Answer:

The answer is -23.

Step-by-step explanation:

substitute x with -4. multiply and add regularaly.

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A researcher was interested in utilities provided by city governments. The researcher randomly selected 20 counties from a list
DaniilM [7]

Answer:

1. The population of interest is all city goverments in the U.S.

5. The parameter of interest is the proportion of the city goverments in the U.S. that provide electricity to their residents.

Step-by-step explanation:

Hello!

Missing questions:

Which of the following is true? Select all that apply.

  1. The population of interest is all city governments in the U.S.
  2. The population of interest is the 192 cities.
  3. The population of interest is all city governments that provide utilities to their residents.
  4. The population of interest is 6.25%
  5. The parameter of interest is the proportion of the city governments in the U.S. that provide electricity to their residents.
  6. The parameter of interest is 6.25%
  7. The population of interest is the 20 counties.
  8. The parameter of interest is the list of all counties in the U.S.

The objective of this essay is to test utilities provided by city governments, for this a sample of 20 counties was taken then contacted each city of them counting how many of them provided utilities to their residents, finding out that 12 out of 192 cities (6.25%) provided electricity to their residents.

The study variable is:

X: Number of city governments that provide utilities (electricity) to their residents, in a sample of 192.

The population of the study is the city governments in the U.S.

And the parameter of interest is the population proportion of city governments in the U.S. that provide electricity to their residents.

I hope it helps!

4 0
3 years ago
CDs are $15.25 each how much will it cost to buy 3
Sonja [21]

Question

CDs are $15.25 each how much will it cost to buy 3


Answer:

<h2>45.75 $</h2>

Step-by-step explanation:

1 CD = $ 15.25

multiply the unit price by 3

15.25 * 3 = 45.75 $



7 0
3 years ago
Do<br>main of ln(2x+3/×-1)
lozanna [386]
<span>so your equation  would be  2x-3=-1  then your answer would be -1

</span>
7 0
3 years ago
The table shows the results of a survey of students in two math classes.
qwelly [4]

P(more than 1 hour of TV | 6th period class) is  0.352.

<h3>What is the probability?</h3>

Probability determines the odds that a random event would happen. The odds of the random event happening lie between 0 and 1.

P(more than 1 hour of TV | 6th period class) = number of 6th period class students who watch tv for more than an hour / total number of students surveyed

12 / (12 + 9 + 5 + 8)

12 / 34 = 0.352

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

4 0
1 year ago
The volume of the rectangular prism picture included
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