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3 years ago

The sum of the numerator and denominator of a fraction expressed in simplest form is 17. if 3 is added to the numerator, the val

ue of the fraction will be 1. what is the fraction?

Mathematics

1 answer:

kirill [66]3 years ago

7 0

$x+y=17\\
\dfrac{x+3}{y}=1\\\\
x=17-y\\
x+3=y\\\\
17-y+3=y\\
2y=20\\
y=10\\\\
x=17-10\\
x=7\\\\
\boxed{\dfrac{7}{10}}$

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Subtract 5 from both sides
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simplify 4/7 - 5 to 31/-7
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3 years ago

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2 years ago

John's commute to work is 20kmhr while Sheri's commute is 500mmin. Who has the fastest commute to work in mihrif 1.61km=1mi? A S

Andreyy89

Answer:

A) Sheri has the faster commute by 6.2 miles/hr.

Step-by-step explanation:

Given

John's commute to work $=20\ km/hr$

Sheri's commute to work $=500\ m/min$

$1.61\ km = 1\ mile$

John's commute to work in miles per hour = $\frac{20\ km}{1 hr}\times \frac{1\ mile}{1.61\ km}= 12.42\ miles/hr$

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