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lesya [120]
3 years ago
13

Find the interest rate. Interest: $24 Principal: $400 Time:2 years

Mathematics
1 answer:
stiv31 [10]3 years ago
4 0
Interest= Principal x Rate x Time (in yrs)
24=400 x R x 2
24=800 x R
R=24/800
R=.03
R= 3 %

Hope this helps :)
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Answer:

Probability that detector B goes off is '0.615'

Step-by-step explanation:

Given that:

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Assuming that

Probability that detector B goes off is 'p' Hence the probability that detector B does not goes off  is (1-p)

Thus the probability that detector A goes off and detector B does not go off is  product of the individual probabilities

P(E)=0.65\times (1-p)\\\\0.65\times (1-p)=0.25\\\\0.65-0.65p=0.25\\\\0.65-0.25=0.65p\\\\\therefore p=\frac{0.40}{0.65}=0.615

Probability that detector B goes off is '0.615'

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