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ss7ja [257]
3 years ago
13

3y+6/2x y=4, and x=3

Mathematics
1 answer:
Dvinal [7]3 years ago
8 0

Answer:

I believe the answer is 21

Step-by-step explanation:

3•4+6/2•3

12+3•3

12+9=21

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According to the rules of significant figures, the number of digits that are estimated in a measurement is:
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3 years ago
(Hypothetical.) Suppose five measurements of the volume of a liquid yield the following data (in milliliters).
Digiron [165]

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The 95% confidence interval for the measurements is [48.106, 53.494].

Step-by-step explanation:

The average M of this sample is

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The standard deviation s of this sample is

s=\sqrt{\dfrac{1}{(n-1)}\sum_{i=1}^5(x_i-M)^2}

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The degrees of freedom are

df=n-1=5-1=4

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Then, the lower and upper bounds of the CI are:

LL=50.800-2.694=48.106\\\\UL=50.800+2.694=53.494

The 95% confidence interval for the measurements is [48.106, 53.494].

4 0
4 years ago
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