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Rashid [163]
4 years ago
11

12) Which ordered pair is the solution of the equation 5x + y = -23?

Mathematics
1 answer:
Luda [366]4 years ago
4 0

Answer:

The answer would be A.

Step-by-step explanation:

5 (-5)+ (2) = -23

-25 +2=-23

-23=-23!

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Jeremy's father drives him to school in rush hour traffic in 20 minutes. One day there is no traffic, so his father can drive hi
nexus9112 [7]
Hello.

Let's call the initial speed 'x'. When driving at that speed, Jeremy's father takes 20 minutes to arrive to the school. When driving 18 mph faster (x + 18), he gets there in 12 minutes. Therefore:

20 - x
12 - x + 18

As they're inversely proportional:

12 - x
20 - x + 18

\frac{12}{20} = \frac{x}{x+18}
12x + 216 = 20x
216 = 8x
x = \frac{216}{8}
x = 27

That means that the initial speed is of 27mph. Since we have the time and the speed, we can find the distance:

Average Speed = Total Distance Travelled / Time Interval

20 minutes = 0.33h

27 = \frac{Distance}{0.33}
Distance = 27.0.33
Distance = 12.21 miles

Hope I helped and good luck.
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Neil and gabriela  will both pay half. Or 50%.
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Valerie earns $24 per hour. Which expression can be used to show how much money she earns in 7 hours?
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