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3 years ago

Solve the system of equations using substitution y=2x+3 y=3x+1

2 answers:

7 0

1: Set the two equations equal to each other.
2x+3=3x+1
2: Subtract 1 from both sides.
2x-2=3x
3: Subtract both sides by 2x.
-2=x.
4: Plug in your x value.
y=2(-2)+3. Y=-1.

I hope I was able to help. Best of luck.

Archy [21]3 years ago

4 0

The Answer is y=2x+3 Because<span> y = 3x + 1
2x + 3 = 3x + 1
2 = x and y = 7 || ordered pair(2,7) is the solution for this syetem</span>

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3 years ago

A small airplane flies 750 miles with an average speed of 250 miles per hour. 1.75 hours after the plane leaves, a Boeing 747 le

sleet_krkn [62]

Answer:

The average speed of the 747 was of 600 miles per hour.

Step-by-step explanation:

A small airplane flies 750 miles with an average speed of 250 miles per hour.

Velocity is distance divided by time, and here, we find the time of the small airplane. So

$v = \frac{d}{t}$

$250 = \frac{750}{t}$

$250t = 750$

$t = \frac{750}{250}$

$t = 3$

1.75 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time;

This means that it traveled 750 miles in 3 - 1.75 = 1.25 hours.

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$v = \frac{d}{t} = \frac{750}{1.25} = 600$

The average speed of the 747 was of 600 miles per hour.

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