4 years ago

Do integers have to be a set of positive and negative numbers?

Mathematics

1 answer:

AVprozaik [17]4 years ago

3 0

Integers are whole numbers that range from negative infinity to positive infinity

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The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the speed of the wind in miles per hour

y ----> the speed of the jet in still air in miles per hour

we know that

With a tailwind

$y+x=\frac{868}{2}$

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With a headwind

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solve the system of equations A and B by elimination

Adds equation A and equation B

$y+x=434\\y-x=396\\------\\y+y=434+396\\2y=830\\y=415$

Find the value of x

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therefore

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