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IgorLugansk [536]
2 years ago
8

What is 5% of 20? I need help

Mathematics
1 answer:
Inessa [10]2 years ago
8 0

Answer:10

Step-by-step explanation:

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Which number is the same as this: 2 (5m + 1) is the same as:
alexira [117]
2(5m+1)
= 2*5m+2
= 10m+2.

The correct answer is 10m+2
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4 0
3 years ago
A fire engine starts pumping water at 9:20 am at the rate of 800 gallons per minute. Another fire engine, pumping at the rate of
AleksAgata [21]

Answer:

10:10 AM

Step-by-step explanation:

The first thing is to use an identical time variable for both cases, we will do it as follows:

Let t = number of minutes of pumping time of the first fire engine

Therefore, for the second fire truck it would be:

(t-10) = pumping time of the second fire engine, since it started 10 min after the first engine.

To find the value of t, we equalize the equations of the first engine and the second engine:

We know that the first one would be: 800 * t

And the second: 1000 * (t-10)

Thus

1000 * (t-10) = 800 * t

1000 * t - 10000 = 800t

1000 * t - 800 * t = 10000

200 * t = 10000

t = 10000/200

t = 50 minutes

In other words, 50 minutes after the first engine starts pumping, it equaled the second

To know the time they were matched it would be like this:

9:20 AM +: 50 = 10:10 AM

Therefore, at 10:10 AM both engines were matched.

To check the above we have to:

50 * 800 = 40000

40 * 1000 = 40000

Therefore, in that time, they were equalized.

4 0
3 years ago
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Solve each compound inequality<br> -3 &lt; x -1 &lt; 4
liubo4ka [24]
X - 1 > -3    add 1 to both sides:-

so x > -2

and

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so  x < 5
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Since you can only multiply the 2 and 4 together, you get 8x^2.
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