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Crazy boy [7]
3 years ago
13

Factor 9(n − 4) − 4n(n − 4)

Mathematics
2 answers:
schepotkina [342]3 years ago
4 0
Hey there :)

9( n - 4 ) - 4n ( n - 4 )
We can take ( n - 4 ) as common as both are getting multiplied by ( n - 4 )

We can join 9 - 4n together

Therefore, the final answer will be ( n - 4 )( 9 - 4n )
ivann1987 [24]3 years ago
4 0
9(n-4) - 4n(n-4)

Here you see that there are two (n-4). So you have to factor (n-4).

It gives : (n - 4) (9 - 4n).

In short, the answer would be the option A.

Hope this helps !

Photon
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The math team has 11 boys, 10 girls, and 1 coach. What is the ratio of coach to students?
love history [14]

Answer: 1:21

Step-by-step explanation:

We know that if they say students they mean both boys and girls so we add 11 and 10 to make 21 and since its, (COACH,) and then student we do 1:21 and not 21:1!

7 0
4 years ago
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Answer:

The value of test statistic

   |Z| = |-2.2883| = 2.2883

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 57.7miles/gallon

The standard deviation of the Population = 1.9

The mean of sample x⁻ = 57.4

Given that the sample size 'n' =210

level of significance = 0.1

<u><em>Step(ii):-</em></u>

Test statistic

        Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

       Z = \frac{57.4-57.7}{\frac{1.9}{\sqrt{210} } }

      Z = -2.2883

  |Z| = |-2.2883| = 2.2883

<u><em>Final answer:-</em></u>

The value of test statistic

   |Z|  = 2.2883

7 0
3 years ago
Factor: <img src="https://tex.z-dn.net/?f=%2025y%5E%7B2%7D%20" id="TexFormula1" title=" 25y^{2} " alt=" 25y^{2} " align="absmidd
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The external angles of a regular octagon are 360°/8 = 45°, so that is the measure of angles UTW and UVW. It is also the amount by which reflex angle TUV exceeds 180°.

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Then 3x° = 45° and x° = 15°.

Then the sum of interest is ...

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3 years ago
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