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Gnesinka [82]
3 years ago
8

PLEASE HELP ME! I'v tried but still haven't got it!

Mathematics
1 answer:
spayn [35]3 years ago
5 0

Answer:

Step-by-step explanation:

part a: time, student surf the internet  

part b

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What is the interval notation for the pic above?!
svetoff [14.1K]

Answer:

x>2, x<2

Step-by-step explanation:

x>2, x<2

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3 years ago
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A commuter crosses one of three bridges, A, B, or C, to go home from work. The commuter crosses bridge A with probability 1/3, c
mihalych1998 [28]

Answer:

0.1333 = 13.33% probability that bridge B was used.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Arrives home by 6 pm

Event B: Bridge B used.

Probability of arriving home by 6 pm:

75% of 1/3(Bridge A)

60% of 1/6(Bridge B)

80% of 1/2(Bridge C)

So

P(A) = 0.75*\frac{1}{3} + 0.6*\frac{1}{6} + 0.8*\frac{1}{2} = 0.75

Probability of arriving home by 6 pm using Bridge B:

60% of 1/6. So

P(A \cap B) = 0.6*\frac{1}{6} = 0.1

Find the probability that bridge B was used.

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1}{0.75} = 0.1333

0.1333 = 13.33% probability that bridge B was used.

8 0
3 years ago
What is SU?<br> SU = 5<br> SU = 7<br> SU = 12<br> SU = 13
alex41 [277]

Answer:

SU=5 the first option.

Step-by-step explanation:

I did the assignment.

8 0
3 years ago
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I don’t know this some one please help
Alexxx [7]

Answer:

A

Step-by-step explanation:

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Cal: 250 x 12 + 3,400 = 6,400

5 0
3 years ago
Help hurry !!!!! I need this
Dmitry [639]

Answer:21

Step-by-step explanation:

5 0
3 years ago
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