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stira [4]
3 years ago
13

QUESTION 3 - Distinguish whether the following pairs of events are dependent

Mathematics
1 answer:
TiliK225 [7]3 years ago
8 0

Two eventis are independent if knowledge about the first doesn't change your expectation about the second.

a) Independent: After you know that the first die showed 4, you stille expect all 6 numbers from the second. So, the fact that the first die showed 4 doesn't change your expectation about the second die: it can still show numbers from 1 to 6 with probability 1/6 each.

b) Independent: It's just the same as before. After you know that the first coin landed on heads, you still expect the second coin to land on heads or tails with probability 1/2 each. Knowledge about the first coin changed nothing about your expectation about the second coin.

a) Dependent: In this case, there is a cause-effect relation, so the events are dependent: knowing that a person is short-sighted makes you almost sure that he/she will wear glasses. So, knowledge about being short sighted changed your expectation about wearing glasses.

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You run around the perimeter of the baseball field at a rate of 9 ft. per second. How long does it take you to run around the ba
Nataliya [291]

Answer:

Step-by-step explanation:

Perimeter of a shape is the total distance around it.

The formula for determining the perimeter of a circle is

Perimeter = 2πr

Where

r represents radius of the circle.

π is a constant whose value is 3.14

The given circle has a radius of

225 ft. The perimeter would be

2 × 3.14 × 225 = 1413 ft

Therefore, the perimeter of the circular path of the base ball field would be

40/100 × 1413 = 0.4 × 1413 = 565.2 ft

The perimeter of the base ball field would be

565.2 + 300 + 300 = 1165.2 ft

Time = distance/speed

Time it will take you to run around the baseball field is

1165.2/9 = 129.5 seconds

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3 years ago
Solve this system of linear equations. Separate
Yakvenalex [24]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
I need to know the surface area. Help please!
bearhunter [10]

Answer:

<h2>411,52  in²</h2>

Step-by-step explanation:

Surface area = 2×(6,8×8,2+6,8×10+8,2×10) = 411,52

5 0
3 years ago
I WILL FIVE BRAINLESS TO THE PERSON THAT ANSWER THIS CORRECTLY
emmainna [20.7K]

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Kenya plans to make a down payment plus monthly payments in order to buy a motorcycle. At one dealer she would pay $2,350 down a
vovangra [49]

Answer:

After 16 months, Kenya will have paid $5,550

Step-by-step explanation:

This is a guess and check type of a problem.  You guess a number of months, plug it into x, and see if both equations come out with the same answer.

 If you plug 16 into the first dealer's equation, you get y= 200(16) + 2350.  Solving this equation will mean y equals 5550.

If you plug 16 into the second dealer's equation, you get y= 175(16) + 2750.

Solving this equation will mean y also equals 5550.

8 0
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