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Varvara68 [4.7K]
3 years ago
10

sadie travels through two intersections with traffic lights as she drives to work. The traffic lights operate inependently. The

probability that both lights will be red when she reaches them is 0.22. The probability that the first light will be rerd and the second light will not be red is 0.33. what is the probability that the second light will be red when she reaches it
Mathematics
1 answer:
Mariana [72]3 years ago
6 0

Answer:

The probability that the second light will be red when she reaches it is 0.4

Step-by-step explanation:

Given the two events are independent

Hence, the probability of both the red light is (P1) * (P2) = 0.22

The probability of first light being red = probability of both the intersections to have red light + probability that the first light will be rerd and the second light will not be red

probability of first light being red =  0.22 + 0.33 = 0.55

(P1) * (P2) = 0.22

Substituting the given values, we get -

0.55 * P2 = 0.22

P2 = 0.4

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A translation moves point V(–2, 3) to V prime (negative 2, 7). Which are true statements about the translation?
vivado [14]

The true statements about the translation are:

The transformation rule is (x, y) right-arrow (x + 0, y + 4) ⇒ 2nd

The transformation is a vertical translation ⇒ 3rd

Step-by-step explanation:

Let us revise the translation of a point

  • If the point (x , y) translated horizontally to the right by h units  then its image is (x + h , y)
  • If the point (x , y) translated horizontally to the left by h units  then its image is (x - h , y)
  • If the point (x , y) translated vertically up by k units  then its image is (x , y + k)
  • If the point (x , y) translated vertically down by k units  then its image is (x , y - k)

∵ The coordinates of point V are (-2 , 3)

∵ The coordinates of point V' are (-2 , 7)

- The x-coordinate does not change but the y coordinate

   changes, that means the translation is vertically only

∴ The translation is vertically

∵ The rule of the vertical transformation of point (x , y) is:

   (x , y) → (x + 0 , y + k)

∵ The y-coordinate in V = 3

∵ The y-coordinate in V' = 7

∴ 3 + k = 7

- Subtract 3 from both sides

∴ k = 4

- That means point V is translated 4 units up

∴ The transformation rule is (x , y) → (x + 0 , y + 4)

The true statements about the translation are:

The transformation rule is (x, y) right-arrow (x + 0, y + 4)

The transformation is a vertical translation

Learn more:

You can learn more about transformations in brainly.com/question/9381523

#LearnwithBrainly

6 0
3 years ago
Read 2 more answers
Please help i dont understand
mamaluj [8]

Given:

Number of spheres = 2

Number of prisms = 3

Number of pyramids = 5

To find:

The probability that a pyramid will be selected.

Solution:

We have,

Favorable outcomes = Number of pyramids

                                  = 5

Total outcomes = Total number of figures

                          = 2+3+5

                          = 10

Now, the required probability is:

\text{Probability}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}

\text{Probability}=\dfrac{5}{10}

\text{Probability}=0.5

Therefore, the probability that a pyramid will be selected is 0.5.

6 0
3 years ago
GUYS HELP please i dont know what to answer
grandymaker [24]

Answer:

2nd one : y = -4/x

3rd one : y + x/2 = 9

4th one

5th one : y = x^2

6th : 5.8x - y = 2.3

Step-by-step explanation:

Not sure about these. You might want to wait for another person to answer

Have a nice day!

7 0
3 years ago
To prove that the triangles are similar by the SAS similarity theorem, it needs to be shown that
MakcuM [25]

Answer:

2 sides and angle between them are congruent to the same 2 sides and angle on the other triangle

Step-by-step explanation:

6 0
2 years ago
A scatterplot is shown below. What type of relationship is shown in the graph?
Gwar [14]
Answer: Not 100% sure but I believe it’s C. Non-linear

Hope this helps! ^^
4 0
3 years ago
Read 2 more answers
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