2 years ago

Which of the following is a triangle circumscribed by a circle?

Mathematics

2 answers:

Sidana [21]2 years ago

8 0

Option A is the answer...

lesya [120]2 years ago

4 0

Answer:

Hi again

Its your 3rd option

Step-by-step explanation:

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elena-14-01-66 [18.8K]

I think it’s the second one please correct me if I’m wrong not perfect at this

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3 years ago

Which expression represents the difference quotient of the function f (x) = negative StartRoot 2 x EndRoot?

Kitty [74]

Answer:

25 8af

Step-by-step explanation:

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2 years ago

Read 2 more answers

mr.shu wants to hire one one of the two carpet companies to install carpeting in his basement. Is he more likely to hire Country

poizon [28]

Is that the whole question? It does not specify, so that means there is a 50/50 chance for either.

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2 years ago

What is the slope of the line that passes through the points (4,10) and (1,10) in simplest form

GuDViN [60]

Answer:

Step-by-step explanation:

We can find the slope by using

m = (y2-y1)/(x2-x1)

= (10-10)/(1-4)

= 0/-3

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3 years ago

If a student randomly guesses at 20 multiple-choice questions, find the probability that the student gets exactly four correct.

ad-work [718]

Answer:

Probability = 0.190

Step-by-step explanation:

Given:

Number of questions, 'n' = 20

Each question has four choices.

Let event of choosing correct answer be success and its probability be represented by 'p'.

Therefore, event of choosing wrong answer is failure and its probability be represented by 'q'.

Now, probability of success is choosing one correct answer out of 4 options. So, $p=\frac{1}{4}=0.25$

Now, 'p' and 'q' are complements of each other. Therefore,

$q=1-p=1-0.25=0.75$

Now, we need 4 successes. Therefore, $x=4$

Using Bernoulli's theorem to find 'x' successes from 'n' questions, we get:

$P(x)=_{x}^{n}\textrm{C}p^xq^{n-x}$

Plug in 4 for 'x', 20 for 'n', 0.25 for 'p' and 0.75 for 'q'. Solve.

$P(4)=_{4}^{20}\textrm{C}(0.25)^4(0.75)^{20-4}\\P(4)=_{4}^{20}\textrm{C}(0.25)^4(0.75)^{16}\\P(4)=4845\times (0.25)^4\times (0.65)^{16}\\\\P(4)=0.1896\approx0.190$

Therefore, the probability of getting 4 correct answers out of 20 questions is 0.190.

6 0

2 years ago