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Sunny_sXe [5.5K]
3 years ago
13

Suppose a car uses 30 gallons of gasoline for a trip of 500 miles. How many gallons would be used on a trip of 300 miles?

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
8 0
18 gallons per 300 miles
soldier1979 [14.2K]3 years ago
5 0
Yes thats correct i checked it
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Jonita determined that the distance between her apartment and the nearest hospital was more than 1,600 meters but less than 1,90
Bess [88]

Answer: 1.8 x 103 meters

Step-by-step explanation:

The average of the two extremes is 1,700 meters.  This would be 1.7x10^3 in scientific notation.  None of the four options include this number.  But three stand out as total losers.  We can convert the answer options to see the difference:

O 1.7 x 102 meters  =    170 meters      [Loser]

O 1.8 x 103 meters  =  1800 meters

O 1.7 x 10-3 meters =  0.0017 meters   [Loser]

O 1.8 x 10-2 meters =  0.018 meters     [Loser]

7 0
2 years ago
Part A: The Sun produces 3.9 ⋅ 1033 ergs of radiant energy per second. How many ergs of radiant energy does the Sun produce in 3
Nuetrik [128]

5914 1404 393

Answer:

  A) 1.3×10^37 ergs

  B) 1.435×10^3 mm

Step-by-step explanation:

A) The amount of energy will be the product of the energy rate and time:

  (3.9×10^33 ergs/s)×(3.25×10^3 s) =12.675×10^(33+3) ergs

  = 1.2675×10^(1+36) ergs

  = 1.2675×10^37 ergs ≈ 1.3×10^37 ergs

The mantissa of the result is the product 3.9×3.25, adjusted to have one digit left of the decimal point. The exponent of the result is the sum of the exponents of the factors, adjusted by 1 to match the adjustment in the mantissa.

The final value should be rounded to 2 significant figures, reflecting the precision of the sun's energy production.

__

B) A millimeter is a small fraction of an inch. 10^-3 mm is a small fraction of the width of a human hair, so 1.435×10^-3 mm is not a reasonable estimate of the distance between railroad tracks.

On the other hand, 1.435×10^3 mm is 1.435 m, almost 56.5 inches. This is a much more reasonable measurement of the distance between railroad rails.

  1.435×10^3 mm is more reasonable

8 0
3 years ago
Solve this<br> SOLVE THIS QUESTION PLEASE
salantis [7]

Answer:

12 hour                24 hour

08:05pm               20:05pm

12:01am                  00:01am              

Step-by-step explanation:

7 0
3 years ago
for a sample size of 140 and a proportion of 0.3 what is the standard deviation of the normal curve that can be used to approxim
timofeeve [1]

Answer:

The answer is b.

Step-by-step explanation:

Have a great day!!

8 0
3 years ago
What is the value of n in the equation (1)/(2)(n-4)-3=3-(2n+3)
Pavel [41]

(1/2)(n-4)-3=3-(2n+3)

n = 2

but if it is

(n-4)-3=3-(2n+3)

n = 7/3

5 0
3 years ago
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