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2 years ago

Write an counter example for the statement: all square roots are rational numbers

2 answers:

5 0

That is not true. For example, if you take PI . Rounded is 3.14. But if you were to do the square root of pi then it would be an IRRATIONAL number. so it's false. <span />

olga_2 [115]2 years ago

3 0

It's false because if you take the square root of a decimal number or a complex number, you're sure to find an irrational number.

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A certain unsavory bar for poker-playing dogs is attended by only two types of dogs: "good dogs" and "bad dogs." For a randomly

SVETLANKA909090 [29]

Answer: The required probability is 0.1923.

Step-by-step explanation:

Since we have given that

Probability that it's a good dog = 0.4

Probability that it's a bad dog = 1-0.4 = 0.6

Probability that the dog smokes given that its a bad dog = 0.7

Probability that it smokes given that its a good dog = 0.25

According to question, probability of smoking pipe would be

P(good).P(Smoking pipe|good)+P(bad).P(smoking pipe|bad)

$0.4\times 0.25+0.6\times 0.7\\\\=0.1+0.42\\\\=0.52$

So, Probability of getting a good dog given that it is smoking pipe is given by

$\dfrac{P(good).P(smoking\ pipe|good)}{P(smoking\ pipe)}\\\\=\dfrac{0.4\times 0.25}{0.52}\\\\=\dfrac{0.1}{0.52}\\\\=0.1923$

Hence, the required probability is 0.1923.

3 0

2 years ago

Read 2 more answers

What is: <br> 8x - 2(4 + 3x)

Angelina_Jolie [31]

$8x-2(4+3x) =0\\ 8x-8-6x=0 \\ 2x-8=0 \\ 2x=8 \\ x=4$

6 0

2 years ago

Read 2 more answers

Need help ASAP pls. :)

Troyanec [42]

Answer:

Step-by-step explanation:

because we just multiply the bottom equation by - and we eliminate 7y. now we have -2x=-10 to get x we divide -10 by -2 and get the answer

7 0

2 years ago

N and (2 + 6)<br> What is the answer

AleksandrR [38]

Answer:

Step-by-step explanation:

distribute n between 2 and 6 then add

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2 years ago

Suppose an auto racer won a 400 mile race with a time of 1:41:58. at one point the racer was 40 miles closer to the finish tha

enot [183]

400/2 = 200
200 + 20 = 220
200 - 20 = 180
Answer: He had gone 220 miles.

He was 180 miles from the finish and 220 from the start, so he was 40 miles closer to the finish than to the start.

7 0

2 years ago