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vesna_86 [32]
2 years ago
8

Add (-3-7) + (4x + 7)

Mathematics
2 answers:
Naya [18.7K]2 years ago
7 0

Answer:

4x-3

Step-by-step explanation:

First, you Subtract the numbers

(-3-7)+(4x+7)

(-10)+(4x+7)

Then you add the numbers

-10+4x+7

-3+4x

Finally, you rearrange the numbers

-3+4x

4x-3

alexira [117]2 years ago
3 0

Answer:

x

Step-by-step explanation:

(-3x - 7) + (4x + 7)

Combine like terms

4x  + 7

-3x - 7

x

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

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Step-by-step explanation:

We are given the following in the question:

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Putting the values, we get,  

t_{critical}\text{ at degree of freedom 15 and}~\alpha_{0.05} = \pm 2.1314  

14.8 \pm 2.1314(\dfrac{0.65}{\sqrt{16}} ) \\\\= 14.8 \pm 0.3463 = (14.4537 ,15.1463)  

is the required confidence interval for the true mean length of rods.

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