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Shalnov [3]
3 years ago
6

For 15, the answer is b correct?

Mathematics
2 answers:
den301095 [7]3 years ago
7 0

Answer:

a. C = (0,0), r = 3

Step-by-step explanation:

No, the 9 is squared. The square root of 9 is ±3. Therefore, the only possible answer is a.

Can I get brainliest

vaieri [72.5K]3 years ago
5 0

Answer:

a C= (0, 0), r = 3

Step-by-step explanation:

For 15th question: a Is the correct answer

{x}^{2}  +  {y}^{2}  = 9 \\  {(x - 0)}^{2}  +  {(y - 0)}^{2}  =  {3}^{2}  \\ equating \: it \: with \\ {(x - h)}^{2}  +  {(y - k)}^{2}  =  {r}^{2} \\h = 0 \\ k = 0 \\c = (h, \:  \: k)  \\ c= (0, \:  \: 0) \\   {r}^{2}  =  {3}^{2}  \\ r = 3

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How many ways are there to rearrange the letters ALIVE in such a way that the word EVIL is not contained in the resulting word
Sergio [31]

Answer: 118 combinations.

Step-by-step explanation:

In ALIVE we have 5 letters, rearranging it we have the possible options of:

5 options for the first letter.

4 options for the second letter, as one was already chosen for the first one

3 options for the third letter, as 2 were already chosen.

2 options for the fourth letter.

1 option for the last letter.

The total number of combinations will be equal to the product of the numbers of options for each letter, then we have:

5*4*3*2*1 = 120 combinations.

And the combinations where the word EVIL is formed are:

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2 combinations, then the total number of combinations such that the word evil is not formed are:

120 - 2 = 118 combinations.

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3 years ago
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erik [133]

Answer:

answer = 3

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
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Angelina_Jolie [31]

Answer:

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Step-by-step explanation:

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In a classroom of 3333 students, the ratio of boys to girls is 3:83:8. How many boys are in the class?
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The basal energy rate is the daily amount of energy (measured in calories) needed by the body at rest to maintain body temperatu
katovenus [111]
Given :
A = <span>70 years old
H = 172 cm
W = 55 kg

so calculate the the basal energy rate B
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</span><span>where B is the basal energy rate (in calories), W is the weight (in kilograms), H is the height (in centimeters), and A is the age (in years)
substitute the given
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3 years ago
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