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hjlf
3 years ago
12

Please help!!! Brainliest?

Mathematics
1 answer:
Elena L [17]3 years ago
7 0
I think the answer is b i hope this helps
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The security system in a house has two units that set off an alarm when motion is detected. Neither one is entirely reliable, bu
Mariulka [41]

Answer:

Probability that detector B goes off is '0.615'

Step-by-step explanation:

Given that:

1) Probability that detector A goes off and detector B does not go off is 0.25.

2)Probability that detector A does not go off is 0.35.

3)Probability that detector A  goes off is (1-0.35)=0.65

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'

5 0
3 years ago
Naina went on a trip. She covered a distance of 34 Kilometre 46 metre by car, 143 kilometre 92 metre by train, 5 kilometre 92 me
GaryK [48]

Answer:

185590 m

or 185 km 590 meters

Step-by-step explanation:

to calculate total distance covered, convert km to meter and adding the numbers together

1km = 1000m

34 Kilometre 46 metre = (34 x 1000) + 46 = 34046m

143 kilometre 92 metre = ( 143 x 1000) + 92 =  143,092m

5 kilometre 92 metre = (5 x 1000) + 92 = 5092

2 kilometre 60 metre = (2 x 1000) + 60 = 2060

1.3 km = 1.3 x 1000 = 1300

7 0
3 years ago
Can yall help me with this plzz? (UwU)
mote1985 [20]

Answer: B

Step-by-step explanation:

The chances of a 1 being pulled out of 50 is a 1 out of 50 chance which is a higher chance then any other option.

Hope this helps you!

4 0
3 years ago
Elijah and 2 of his friends are each paid $20 per afternoon
aleksklad [387]
300 all together but 100 solo
6 0
3 years ago
Read 2 more answers
How much ₹ each will get if 242.46₹ is distributed equally among the students​
slavikrds [6]

<em>Complete Question:</em>

<em>How much ₹ will each get if 242.46₹ is distributed equally among the 6 students​ </em>

Answer:

Each of the 6 students will get ₹40.41

<em></em>

Step-by-step explanation:

Given

Amount = 242.46

Students = 6

Required

Determine how much each student gets

To do this, we simply divide the total amount by the number of students

i.e.

Each\ Students = \frac{Amount}{Number\ Students}

Each\ Students = \frac{242.46}{6}

Each\ Student = 40.41

<em>Hence, each of the 6 students will get ₹40.41</em>

5 0
3 years ago
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