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Nonamiya [84]
3 years ago
6

A boat travels 8 km upstream and 8 km back. The time for the round trip is 2 hrs. The speed of the stream is 4 ​km/hr. What is t

he speed of the boat in still​ water?
Mathematics
1 answer:
marin [14]3 years ago
8 0

Answer: 12km/hr

Step-by-step explanation:

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A statistical survey found that 20% of cars are red, and 10% are electric cars. It was further discovered that of all cars that
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Yes is red .............
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Suppose A and B are independent events if P(A) = 0.4 And P(B) = 0.1, what is P(A'uB)? APEX
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For Independent Events, P(A) × P(B) = P(A∩B)

so we have, P(A∩B) = 0.4×0.1 = 0.04

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This information can be represented on a Venn diagram as shown below

P(A'∪B) means the union of everything that is not A with everything that is B

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3 years ago
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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Find the sum of 86331 and 909
devlian [24]
87,240. I added them both together.
Sum= addition
4 0
3 years ago
Braceleftzf y = 8/7 x − 2/3 <br> 8/3 x + y = 5/9
givi [52]

Answer:

  (x, y) = (77/240, -3/10)

Step-by-step explanation:

It is convenient to write the equations in standard form.

Multiplying the first equation by 21 gives ...

  21y = 24x -14

Multiplying the second equation by 8 gives ...

  24x +9y = 5

Then the system of equations in standard form is ...

  • 24x -21y = 14
  • 24x +9y = 5

Subtracting the first from the second, we get ...

  (24x +9y) -(24x -21y) = (5) -(14)

  30y = -9

  y = -9/30 = -3/10

Substituting this into the second equation, we have ...

  24x +9(-3/10) = 5

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  x = 7.7/24 = 77/240

The solution is (x, y) = (77/240, -3/10).

7 0
3 years ago
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