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snow_tiger [21]
3 years ago
8

What is the slope of the line that passes throught the points (1,1) and (-1,-5)

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
6 0

m = \dfrac{ \textrm{rise}}{\textrm{run}} = \dfrac{1 - -5 }{1 - -1} = \dfrac{6}{2} = 3


Slope is 3



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Determine the astm grain size number if 33 grains per square inch are measured at a magnification of 270×
strojnjashka [21]
8.9

The equation for the grain size is expressed as the equality:
Nm(M/100)^2 = 2^(n-1)
where
Nm = number of grains per square inch at magnification M.
M = Magnification
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Let's solve for n, then substitute the known values and calculate.
Nm(M/100)^2 = 2^(n-1)

log(Nm(M/100)^2) = log(2^(n-1))
log(Nm) + 2*log(M/100) = (n-1) * log(2)
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(1.51851394 + 2*0.431363764)/0.301029996 + 1 = n
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2.381241468/0.301029996 + 1 = n
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If you want to calculate the number of grains per square inch, you'd use the
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Nm(M/100)^2 = 2^(n-1)
Nm(1/100)^2 = 2^(8.9-1)
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Nm(1/10000) = 238.8564458
Nm = 2388564.458

Or about 2,400,000 grains per square inch.
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Answer:

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Step-by-step explanation:

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