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iren2701 [21]
3 years ago
7

At a local gas station, regular unleaded gasoline is priced at $1.10 per gallon. If it cost $16.50 to fill a cars gas tank, how

many gallons of gasoline did the tank hold?
Mathematics
1 answer:
8090 [49]3 years ago
6 0
The tank hold 15 gallons.Because you divide 16.50 by 1.10 .
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28.150=26.5 is the amount you can spend on water. so 26.5/1.29= 20.54  so you can buy 20 bottles of water

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Help!!! how many solutions are there to this nonlinear system???
Anna [14]

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C

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8 0
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A.63<br> B.54<br> C.99<br> D.126
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C

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6 0
2 years ago
Read 2 more answers
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
n = ASTM grain size number

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)
(log(Nm) + 2*log(M/100))/log(2) = n-1
(log(Nm) + 2*log(M/100))/log(2) + 1 = n

(log(33) + 2*log(270/100))/log(2) + 1 = n
(1.51851394 + 2*0.431363764)/0.301029996 + 1 = n
(1.51851394 + 0.862727528)/0.301029996 + 1 = n
2.381241468/0.301029996 + 1 = n
7.910312934 + 1 = n
8.910312934 = n

So the ASTM grain size number is 8.9

If you want to calculate the number of grains per square inch, you'd use the
same formula with M equal to 1. So:
Nm(M/100)^2 = 2^(n-1)
Nm(1/100)^2 = 2^(8.9-1)
Nm(1/10000) = 2^7.9
Nm(1/10000) = 238.8564458
Nm = 2388564.458

Or about 2,400,000 grains per square inch.
7 0
3 years ago
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