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love history [14]
3 years ago
11

Given: 3x+7+2(4x+1) = 3(x-1) -4 prove: x=-2

Mathematics
1 answer:
denis23 [38]3 years ago
7 0

Answer:

x = -2, proven below.

Step-by-step explanation:

3x + 7 + 2(4x+1) = 3(x-1) - 4

3x + 7 + 8x + 2 = 3x - 3 - 4

9 + 11x = 3x - 7

16 + 11x = 3x

16 = - 8x

-2 = x

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Answer:

II and III

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From statement II in the question, it is true that the standard deviations of two different samples from the same population may be the same. The population standard deviation is a fixed value calculated from every individual in the population.  A sample standard deviation is calculated from only some of the individuals in a population.

Also from statement III, it is true that statistical inferences can be used to draw conclusions about the populations based on sample data. The mean of a population does not necessarily depends on the particular sample chosen. Therefore statement I is false.  

3 0
3 years ago
I'm having trouble filling this chart out and need some help please.​
777dan777 [17]

Answer:

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7 0
2 years ago
A piece of blue yarn is 5/ 3/7 yards long. A piece of pink yarn is 5 times as long as the blue yarn. How much longer is the pink
MaRussiya [10]

Answer:

27 1/7

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8 0
3 years ago
Find RS.<br> R<br> S<br> 22<br> X<br> Q<br> T<br> 26<br><br> I don’t know how to do this one.
Ahat [919]

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6 0
3 years ago
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MA_775_DIABLO [31]

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hope this helped! :)

4 0
3 years ago
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