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Mandarinka [93]
3 years ago
8

Can someone explain

Mathematics
2 answers:
Savatey [412]3 years ago
8 0
Add, -2/3 + 5/6

The denominators of the fractions must be equal to be able to sum the numbers.

What value should we multiply the 3, so that it is equal to 6? It would be 2

But since we must multiply the denominator by 2, the numerator will also have to multiply.

Because, 2/2 = 1

-2/3 × 2/2 = -4/6

Then,

= -2/3 + 5/6

= -4/6 + 5/6

Now we can to sum..

= (-4 + 5)/6

= 1/6
aev [14]3 years ago
7 0
Simple, you are adding a negative to a positive, so think of it as a subtraction, 5/6 - 2/3 = .
2/3 is 4/6.
5/6 - 4/6 = 1/6
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Flying against the wind, a jet travels 2190 miles in 3 hours. Flying with the wind, the same jet travels 9520 miles in 8 hours.
dezoksy [38]

Answer:

Velocity of jet in still air is 970 miles per hour and velocity of wind is 210 miles per hour.

Step-by-step explanation:

Jet's velocity against wind is

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Let the velocity of jet in still air be x miles per hour and velocity of wind be y miles per hour.

As such its velocity against wind is x − y and with wind is x + y and therefore

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Adding the two 2 x = 1940 and x = 970 and y = 1180 − 970 = 210

Hence velocity of jet in still air is 970 miles per hour and velocity of wind is

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Actual Answer:

https://socratic.org/questions/flying-against-the-wind-a-jet-travels-3040-miles-in-4-hours-flying-with-the-wind

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3 years ago
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Answer:

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Step-by-step explanation:

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dsp73

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Step-by-step explanation:

a=13 b=13 c=10

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