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slavikrds [6]
3 years ago
12

Least common multiple of 21, 33, 57

Mathematics
1 answer:
Bond [772]3 years ago
4 0
The answer to this is 4389
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A signal light is green for 4 minutes, yellow for 10 seconds, and red for 3 minutes. If you drive up to this light, what is the
posledela

Answer:

0.56 is the required probability.

Step-by-step explanation:

Time for which signal shows green light = 4 minutes

Time for which signal shows yellow light = 10 seconds

Time for which signal shows red light = 3 minutes

To find:

Probability that the signal will show green light when you reach the destination = ?

Solution:

First of all, let us convert each time to same unit before doing any calculations.

Time for which signal shows green light = 4 minutes = 4 \times 60 seconds = 240 seconds

Time for which signal shows yellow light = 10 seconds

Time for which signal shows red light = 3 minutes = 3 \times 60 seconds = 180 seconds

Now, let us have a look at the formula for probability of an event E:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

Here, E is the event that green light is shown by the signal.

Number of favorable cases mean the time for which green light is shown and Total number of cases is the total time <em>(Time for which green light is shown + Time for which Yellow light is shown + Time for which red light is shown)</em>

So, the required probability is:

P(E) = \dfrac{240}{240+10+180}\\\Rightarrow P(E) = \dfrac{240}{430}\\\Rightarrow \bold{P(E) \approx 0.56 }

5 0
2 years ago
I need the answer please
photoshop1234 [79]
It would first be 0.7 and then 1.1
4 0
3 years ago
Read 2 more answers
Please help quickly !
bixtya [17]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
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What is the value of fraction 1 over 3x2 + 5.2y when x = 3 and y = 2?
LenaWriter [7]
\dfrac{1}{3}x^2+5.2y\\\\for\ x=3\ and\ y=2\\\\\dfrac{1}{3}\cdot3^2+5.2\cdot2=\dfrac{1}{3}\cdot9+10.4=\dfrac{9}{3}+10.4=3+10.4=13.4
4 0
2 years ago
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Janinne, Monique, and Kathy were baking cookies for a bake sale. Janinne made 68%, Monique made 3/25, and Kathy made 0.2 of the
liubo4ka [24]

Answer:

Janninne made 68% then 3/25 turned into percentage 12% then 0.2 equals 20%. So you order it by 68% (Janinee), 20% (Kathy), AND 12% (Monique)

6 0
3 years ago
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