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elena-s [515]
3 years ago
12

A LOT OF POINTS!!!! Darnell's car used 8 gallons of gasoline to travel 340 miles. After a mechanic worked on the car, it used 7

gallons of gasoline to travel 350 miles. If the price of gasoline was approximately $4.00 per gallon, how much less, to the nearest cent per mile, did it cost to run the car after the mechanic worked on it? Please tell me the correct answer with the steps!! Whoever gives the answer with steps will be marked the BRAINLIEST!!!
Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0
Cost before
8*4=32
32/340=0.0941

after
7*4=28
28/350=0.08 exactly

about 1 cent per mile cheaper
Anon25 [30]3 years ago
6 0
I think $1 went DOWN Hope this helps!  :)
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krok68 [10]

Answer:

9 thx man

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Step-by-step explanation:

6 0
3 years ago
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como calcular la cantidad de horas por proyecto si un contratista tiene 5,000 horas-hombres y el costo es de $10 y $12 por proye
Tju [1.3M]

Answer:

Each project has 2.500 man-hours

Step-by-step explanation:

Available man hours: 5000

For two projects          Costs $

X: project A                     10

Y: project B                     12

Approach:

X + Y = 5000 => X = 5000 - Y

10 * X + 12 * Y = 55000

replacing:

10 * (5000 - Y) + 12 * Y = 55000

50000 - 10 * Y + 12 * Y = 55000

2 * Y = 55000 - 50000

Y = 5000/2

Y = 2500

For X:

X = 5000 - 2500

X = 2500

The number of hours available for each project are:

Projects Man            hours

X: project A              2500

Y: project B              2500

6 0
3 years ago
Determine the missing angle in the picture below.
rusak2 [61]

Answer:

x =41.18114952

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

We know the hypotenuse and adjacent sides

cos theta = adjacent / hypotenuse

cos x  = 14.3/19

taking the inverse cos of each side

cos^-1 (cos x) = cos ^-1 ( 14.3/19)

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3 0
3 years ago
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pishuonlain [190]
Division is basically
x divided by y=x/y so
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\frac{18}{ \frac{2}{3} } times  \frac{ \frac{3}{2} }{ \frac{3}{2} } = \frac{ \frac{54}{2} }{ \frac{6}{6} }= \frac{27}{1}=27

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3 years ago
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Leni [432]
2x-10 is the answerr
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