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Drupady [299]
3 years ago
15

When full a 22 gallon tank holds 129.8 pounds of gasoline estimate the weight of 1 gallon of gasoline. If it cost $91.30 to fill

the gas tank estimate cost per gallon
Mathematics
2 answers:
photoshop1234 [79]3 years ago
6 0
2 seperate questions
what is the weight of 1 gallon and what is the cost per gallon

weight/1gallon=wieght/gallons=129.8lb/22gal=5.9lb/1gal
weigth is 5.9lb per gallon

cost per gallon=cost/gallons=$91.30/22gal=$4.15/1gal
cost is $4.15 per gallon




if ya wanted to estimate

lb per gallon is 129.8lb/22gal≈130/20=6.5lb/gal=6.5lb per gal
cost is $91.30/22gal ≈90/20=9/2=$4.50 per gal
polet [3.4K]3 years ago
5 0
Keep in mind, estimation is not exact...
estimation.....22 gallons rounds to 20......129.8 lbs rounds to 130 lbs....91.30 rounds to 90

130/20 = 6.5 lbs per gallon

90 / 20 = $ 4.50 per gallon


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Explanation:

1) Given function:

y=tan(x- \frac{5 \pi }{6} )

2) x-intercept are the roots of the function, i.e. the solution to y = 0

3) to find when y = 0, you can either solve the equation or look at the graph.

4) Solving the equation you get:

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arctan(0) is the angle whose tangent is zero,so this is 0

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Since, the tangent function is a periodic function, there are infinite x-intecepts, that is why the questions asks for one example and not all the values.

You can verify by replacing the value x = 5π/6 in the given function:

y = tan (5π/6 - 5π/6) = tan(0) = 0.
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