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Rudiy27
3 years ago
9

Is the expression 3(x+1 1/2)-3equivalent to 3x+1 1/2

Mathematics
1 answer:
nasty-shy [4]3 years ago
8 0
No because you are distributing and for 3(x+11/2), you multiply 3 times x is 3x and then 3 times 11/2 is 16 1/2 . All together 3x+16 1/2 or 16.5

It is not equal to 3x+11/2.
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3 years ago
One watering system needs about three times as long to complete a job as another warning system when both systems operate at the
algol13

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One watering system requires 36 minutes to complete the job alone while another watering system requires 12 minutes to complete the job alone.

Step-by-step explanation:

Given:

Both the system can complete the job = 9 minutes

We need find the time required by each system to do the job.

Solution:

Let the time required by another watering system to complete the job be 'x' mins.

Now given:

One watering system needs about three times as long to complete a job as another watering system.

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By Cross multiplication we get;

4\times9 =3x\\\\3x =36

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\frac{3x}{3}=\frac{36}{3}\\\\x=12\ min

Time required by One watering system = 3x =3\times 12 =36\ min

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