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Elina [12.6K]
3 years ago
9

In triangle abc, two angles add to be 91 degrees. The third side is 90 degrees. True or false

Mathematics
2 answers:
Rudiy273 years ago
6 0
The answer is  false because a triangle always equals to 180°

Hope my answer helped :)
mezya [45]3 years ago
5 0
It's false, a triangle always equals to 180°
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Factor: 8ab - 16ac + 12a
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The GCF we factor out is 4a

8ab = 4a*2b
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12a = 4a*3

Each term has been factored so that 4a is a factor

Using those factorizations, we can use the distributive property in reverse
8ab - 16ac + 12a = 4a*2b - 4a*4c + 4a*3
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olga_2 [115]

Answer:

a

The probability that the selected joint was judged to be defective by neither of the two inspectors is   P(A' n B' ) = 0.8855

b

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Step-by-step explanation:

From the question we are told that

   The sample size is n_s =  10000

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The the probability that the selected joint was judged to be defective by neither of the two inspectors is mathematically represented as

      P(A' n B' ) =  1 - P(A u B)

Now

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substituting values

        P(A\ u \ B) = \frac{1145}{ 10 000 }

So  

      P(A' n B' ) =  1 - \frac{1145}{10 000}

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the probability that the selected joint was judged to be defective by inspector B but not by inspector A  is mathematically represented as

     P(A' n B) =  P(A \ u \ B) -P(A)

Now

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substituting values

       P(A) =  \frac{742}{10 000}

So

     P(A' n B) =   \frac{1145}{10 000}  - \frac{742}{10 000}

    P(A' n B) =0.0403

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