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Andreyy89
3 years ago
10

2x-4y=8y=1/2x+6help your supposed to substitute but I dont know how​

Mathematics
1 answer:
WINSTONCH [101]3 years ago
5 0

Answer:

no solution

Step-by-step explanation:

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The sum of two numbers is 48 . The larger number is 12 more than the smaller number. What are the numbers?
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Smaller is 18 and larger be 30

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One hundred times the quantity six plus five
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100 times (6+5)
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What is the quotient of 2 1/5 divided by 6 3/5 in simplest form?
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Answer:

\frac{1}{3}

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Step-by-step explanation:

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List the first 10 triangular numbers
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a plane averaged 400 mph on a trip going east, but only 280 mph on the return trip. The total flying time in both directions was
Liula [17]

Answer:

1400 miles

Step-by-step explanation:

Speed is the time rate of change of distance. It is the ratio of distance to time and is given by the equation:

Speed(S) = \frac{distance(d)}{time(t)}\\ S=\frac{d}{t}

plane averaged 400 mph on a trip going east, but only 280 mph on the return trip.

The time spent (t₁) in going east is given by:

S=\frac{d}{t_1}\\ t_1=\frac{d}{S} =\frac{d}{400mph}

The time spent (t₂) in going east is given by:

S=\frac{d}{t_2}\\ t_2=\frac{d}{S} =\frac{d}{280mph}

The total time (t) = t₁ + t₂

t = t₁ + t₂ = 8.5 hours

\frac{d}{400}+\frac{d}{280}  =8.5\\280d+400d=952000\\680d=952000\\d=1400miles\\

Therefore the one way distance is 1400 miles

7 0
2 years ago
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