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A jet flew from New York to Los Angeles, a distance of 4,200 kilometers. Then it completed the return trip.
The speed for the return trip was 100 kilometers/hour faster than the outbound speed. This expression,
where x is the speed for the outbound trip, represents the situation.
4,200
4,200
T +
5 + 100
Which expression could be a step in rewriting this sum?

A jet flew from New York to Los Angeles a distance of 4200 kilometers Then it completed the return trip The speed for the return trip was 100 kilometershour fas class=

Respuesta :

divii48

Answer:

the answer of this qst is A

Applying the least common multiple, the fraction is rewritten as

[tex]\frac{4200(x+100)}{x(x+100)} + \frac{4200x}{x(x+100)}[/tex]

Which is option A.

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The fraction given is:

[tex]\frac{4200}{x} + \frac{4200}{x + 100}[/tex]

When two fractions with different denominators are added, the first step is finding the least common multiple of the denominators. The lcm of x and x + 100 is x(x + 100), thus we use it to factor the fraction.

[tex]\frac{4200}{x} + \frac{4200}{x + 100} = \frac{4200\frac{x(x+100)}{x}}{x(x+100)} + \frac{4200\frac{x(x+100)}{x+100}}{x(x+100)} = \frac{4200(x+100)}{x(x+100)} + \frac{4200x}{x(x+100)}[/tex]

Which is option A.

A similar problem is given at https://brainly.com/question/17165235

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