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Natalija [7]
3 years ago
6

7x - y = - 1 (7x + 3y = - 25)

Mathematics
2 answers:
Otrada [13]3 years ago
8 0

Answer:

x = -1

y = -6

Step-by-step explanation:

7x - y = -1 -> y = 1 + 7x

7x + 3y = - 25

Put y = 1 +7x -> 7x + 3(1 +7x) = -25

-> x = -1

-> y = -6

Feliz [49]3 years ago
7 0

Answer:(-1,-6)

Step-by-step explanation:

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Answer question below.
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The speed of the Elvira is 6.545 miles per hour. Then the speed of the Altheia will be 0.545 miles per hour.

<h3>What is speed?</h3>

The distance covered by the particle or the body in an hour is called speed. It is a scalar quantity. It is the ratio of distance to time.

We know that the speed formula

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Let the speed of the Elvira be x. Then the speed of the Altheia will be (x - 6).

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Step-by-step explanation:

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