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Iteru [2.4K]
3 years ago
7

-7x-2y=-13 x-2y=11 solve for x and y

Mathematics
1 answer:
Akimi4 [234]3 years ago
4 0

Answer:

x=3

y=-4

I suggest you use m a t h w a y :)

Step-by-step explanation:

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Among 9 electrical components exactly one is known not to function properly. if 4 components are randomly selected, find the pro
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Answer:

0.4444

Step-by-step explanation:

Use the following property to ease the calculation:

P(At least one)=1-P(None)

Total number of electrical components: 9

Number that does not function well :1

Number that functions well : 8

We have ^8C_4=70 ways to to choose 4 good components from 8.

We have ^9C_4=126 ways to choose 4 components from a total of 9.

If all function properly then none is bad, we ^1C_0=1 way to do this.

P(At least one)=1-\frac{^8C_4*^1C_0}{^9C_4}

P(At least one)=1-\frac{70*1}{126}

P(At least one)=0.4444

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I need to solve for b
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