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AlexFokin [52]
2 years ago
5

Find the linear that is the best fit for the given data. Round decimals values to the nearest hundredth, if necessary

Mathematics
1 answer:
belka [17]2 years ago
3 0
The linear least squares regression will have a slope of:

m=(nΣxy-ΣxΣy)/(nΣx^2-ΣxΣx)

m=(5*2078-30*281)/(5*220-30*30)

m=1960/200

m=9.8

and a y-intercept of:

b=(Σy-mΣx)/n

b=(281-9.8*30)/5

b=-2.6

So the line of best fit is:

y=9.8x-2.6
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So for this polynomial, we will be completing the square. Firstly, what two terms have a product of 20m^2 and a sum of -12m? That would be -10m and -2m. Replace -12m with -2m - 10m: m^2-2m-10m+20

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35% of 120 =<br> 12% of 50 =<br> 55% of 40 =
GrogVix [38]

Step-by-step explanation:

p\%=\dfrac{p}{100}\\\\\\35\%=\dfrac{35}{100}=0.35\\\\35\%\ of\ 120\to0.35\cdot120=42\\\\\\12\%=\dfrac{12}{100}=0.12\\\\12\%\ of\ 50\to0.12\cdot50=6\\\\\\55\%=\dfrac{55}{100}=0.55\\\\55\%\ of\ 40\to0.55\cdot40=22

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Please Help
iVinArrow [24]

Answer:

hundredths; 81.73

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If the number underlined is two, then it will rounding to the hundredths place. Since the number after it is 7, which is greater than 5, we get 81.73.

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