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Gnom [1K]
3 years ago
5

4r+9r-11r+7r= Simplify Combine like terms

Mathematics
2 answers:
zloy xaker [14]3 years ago
6 0

Answer: 9r

Step-by-step explanation:

4r + 9r - 11r + 7r

13r - 11r = 2r

2r + 7r = 9r

~I hope I helped you! :)~

Veseljchak [2.6K]3 years ago
3 0

Answer:

9r

Step-by-step explanation:

4r+9r-11r+7r

Combine like terms

13r -11r+7r

2r+7r

9r

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Answer:

The given statement describe inferential statistics.    

Step-by-step explanation:

Descriptive Statistic:

  • It helps us to summarize a given data set.
  • It could describe the entire population or a sample from the population.
  • There are two types of descriptive measures: measures of central tendency and measures of variability
  • Central Tendency: Mean, mode, Median
  • Measure of Viability: Standard Deviation, Variance, Range, Interquartile range

Inferential Statistic:

  • It s the process of estimating population parameter with the help of a sample from the population.
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Given Scenario:

"Based on a sample of 170 truck drivers, there is evidence to indicate that, on average, independent truck drivers earn more than company-hired truck drivers."

Thus, this is an example of a inferential statistics as a sample was used to estimate the population.

Here,

Sample:

Sample of 170 truck drivers

Population:

All truck drivers.

With the help of a sample, we approximated the population, thus, this statement describe inferential statistics.

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3 years ago
Factorise<br>b^3−b^2+b−1,2b^3−b^2+b−2​
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Answer:

(b² + 1) (b - 1)

Step-by-step explanation:

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