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3 years ago

The standard form of the equation of a circle is (x−3)^2+(y−1)^2=16.

Mathematics

1 answer:

aivan3 [116]3 years ago

7 0

So the answer is A.......

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What is the radius of the circle with this equation of (x-5)2+(y+7)2=8

AysviL [449]

Answer:

2√2

Step-by-step explanation:

compare this equation with the standard equation of a circle centered at (h, k) with radius r:

(x - h)^2 + (y - k)^2 = r^2

(x - 5)^2 + (y + 7)^2=8

Clearly, r^2 = (radius)^2 = 8, and so the radius, r, is √8, or 2√2

3 0

3 years ago

Telemarketing. the probability that a call will reach a live person is 0.2. the calls are independent. (a) a telemarketer places

Sergeeva-Olga [200]

Solution: Telemarketing. the probability that a call will reach a live person is 0.2. the calls are independent. (a) a telemarketer places 5 calls. what is the probability that none of them reaches a live person.

Answer: The given random experiment can be considered as binomial experiment with probability of success = 0.2 and number of trials = 5

Therefore, we have:

$n=5,p=0.2,q=(1-p)=1-0.2=0.8$

Let x be the number calls that reach to live person.

We have to find $P(x=0)$

Using the binomial probability distribution, we have:

$P(x=0)=\binom{5}{0}0.2^{0} (1-0.2)^{5-0}$

$=1 \times 1 \times 0.8^{5}$

$=0.3277$

Therefore, the probability that none of them reaches a live person is 0.3277

6 0

3 years ago

4c-7.8 Evaluate the expression if c=4

slavikrds [6]

I hope this helps you

4.4-7,8

16-7,8

8,2

5 0

3 years ago

Which of the following is a factor of x15 − 64?

svetoff [14.1K]

Answer:(x^5−4) and (x^10+4x^5+16)

3 0

3 years ago

Will give brainiest answer if you show the steps.

Nostrana [21]

I wrote your answer on the paper...

3 0

3 years ago