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inysia [295]
4 years ago
12

WILL MARK BRAINLIEST! If a man walks 15 miles in 3 hours. How many miles can he walk in 7 hours?

Mathematics
2 answers:
OverLord2011 [107]4 years ago
4 0

Answer:

35

Step-by-step explanation:

15 miles in 3 hours is equal 15:3, which you can simplify to 5:1, or  5 miles per hour.

Multiply it by 7, and you get 35:7, or 35 miles in 7 hours.

Hope this helped!

Otrada [13]4 years ago
3 0

Answer: He can walk 35 miles in 7 hours because 15x2=30 and 15/3 is 5.

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Please help and show all work so I can fully understand it, thanks.
seraphim [82]

Answer:

\frac{1}{m-4}

Step-by-step explanation:

\frac{\frac{4m-5}{m^4 -7m^3 +12m^2}}{\frac{4m-5}{m^3 -3m^2}}

Factor the equation:

\frac{\frac{4m-5}{m^2(m^2 -7m+12)}}{\frac{4m-5}{m^2(m-3)}}

\frac{\frac{4m-5}{m^2(m-3)(m-4)}}{\frac{4m-5}{m^2(m-3)}}

Rewrite to suit the format of multiplying two fractions. Remember, dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second. A reciprocal of a fraction is when one switches the place of the numerator and the denominator, that is, the value on top (numerator), and the value on the bottom (denominator).

\frac{4m-5}{m^2(m-3)(m-4)}*\frac{m^2(m-3)}{4m-5}

Simplify, take out common terms that are found on both the numerator and denominator

\frac{4m-5}{m^2(m-3)(m-4)}*\frac{m^2(m-3)}{4m-5}

\frac{1}{m-4}

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