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3 years ago

Solve the system of equations x=y-4

Mathematics

1 answer:

Illusion [34]3 years ago

5 0

Answer:

(-(23/3), -(11/3))

Step-by-step explanation:

x=y-4

2x-5y=3

=====

2x-5y=3

2(y-4)-5y=3 [Substitute (y-4) for x in the 2nd equation]

2y - 8 -5y = 3

-3y = 11

y = -(11/3)

y = -3 2/3

Use this in the 1st equation to find x:

x=y-4

x=-(11/3)-4

x = -(11/3)-(12/3)

x = -(23/3)

x = -7 2/3

See graph attached.

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<u>Answer:</u>

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<u>Step-by-step explanation:</u>

We know that the temperature fell from $0$ degrees to $-6\frac{3}{5}$ degrees in a time period of $2\frac{1}{5}$ hours.

So to find the rate of change of the temperature, we will divide the change in temperature by the number of hours.

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Answer:

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