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just olya [345]
3 years ago
5

Rob goes to work each day by two different routes. As he leaves the apartment parking lot there is a traffic light. If he has a

green light but not a turn arrow, he goes straight and travels for 15-20 minutes, uniformly distributed. If he has a left turn arrow, he turns left, and travels 10-15 minutes, uniformly distributed. If he has a red light, he waits for a left turn arrow. He has timed the traffic light and the light is red for 2 minutes, followed by a left turn arrow for 1 minute, and a green light for 3 minutes. He arrives at the traffic light at uniformly random times each day. What is his expected travel time?
Mathematics
1 answer:
Effectus [21]3 years ago
8 0
Can i send a pic pls help me do it ????
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spayn [35]

Answer:

Step-by-step explanation:

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2 years ago
You and three friends go to the town carnival. You have a coupon for $20 off that will save your group money! If the total bill
Lunna [17]

Answer:

30 that singular tickets for each friend and if your asking for total it would be 120. :)

Step-by-step explanation:

They paid 100 but they had a 20$ off coupon, this means the orignial total would be $120 so 120 divided by 4 (there's four people) = $30 each :)

hope this helped

5 0
3 years ago
-4(4x + 4) + 7(1 + 9x)
SVEN [57.7K]

Answer:

47x - 9

Step-by-step explanation:

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-16x -16 + 7 + 63x

47x -9

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4 0
3 years ago
Read 2 more answers
If the sum of the measures of the interior angles of a polygon is 1920°, how many sides does it have?
gizmo_the_mogwai [7]

Answer:

<u>The regular polygon has 13 sides</u>

Correct statement and question:

If the sum of the measures of the interior angles of a polygon is 1980°, how many sides does it have?

Source:

1,920° is not a valid value for a regular polygon. It should be either 1,980° or 1,800° (it has to be a multiple of 180). We pick 1,980° to answer the question.

Step-by-step explanation:

Let's recall that the formula of the sum of the interior angles of any polygon is:

Sum of Interior Angles = (n-2) * 180°, where n is the number of sides of the polygon.

Therefore, replacing with the value we know:

1,980 = (n-2) * 180

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7 0
3 years ago
The time (in minutes) required to learn the procedure for performing a certain task is uniformly distributed on the interval fro
PtichkaEL [24]

Answer:

a

 P( X >  46)  = 0.7 \  minute

b

\mu  = 42 \ minute

Step-by-step explanation:

From the question we are told that  

   The procedure for performing a certain task is uniformly distributed on the interval from( a =  32 )minutes to (b= 52) minutes

  Generally the cumulative distribution function for continuous uniform distribution is  

             F(x) =  \left \{ {{0 \ \ \ \ \  for  \  x \  x < a} \atop {\frac{x-a}{b-a} } \ \   for \  a \le x \ge b} \atop {1 \ \ \ \ \ \ \  for  \  x  >  b }\right.

Generally the probability that it takes more than 46 minutes to learn the procedure is mathematically represented as

          P( X >  46)  = F(46) = \frac{46 - 32}{52-32}

=>       P( X >  46)  = 0.7 \  minute

Generally the average time required to learn the procedure is mathematically represented as

        \mu =  \frac{a + b}{2}

=>     \mu  =  \frac{32 + 52}{2}

=>     \mu  = 42 \ minute

3 0
3 years ago
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