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MariettaO [177]
3 years ago
7

The range of the function f(k) = k2 + 2k + 1 is {25, 64}. What is the function’s domain?

Mathematics
2 answers:
zavuch27 [327]3 years ago
7 0
Answer is D {4,7}

if u put those values in the equation then u will get that output {25,64}
Fudgin [204]3 years ago
5 0

Answer:

Correct option is:

{4,7}

Step-by-step explanation:

The range of the function f(k) = k² + 2k + 1 is {25, 64}.

i.e. k²+2k+1 can take only two values either 25 or 64

When k=5 ,k²+2k+1=36

when k= -5 ,k²+2k+1=16

when k=8 ,k²+2k+1=81

Hence, domain set cannot contain the points 5,8 and -5

The only option that do not contain any of these numbers is:

{4,7}

Also when k=4 , k²+2k+1=25

and when k=7 , k²+2k+1=64

Hence, Correct option is:

{4,7}

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Can somebody tell me the answer and maybe tell me how you got it too.​
asambeis [7]

To get t on one side, we have to use inverse operations to get rid of the 5.

1. Use inverse operation of multiplication to get rid of 5. Which would be division.

2. Divide both sides by 5.

5t/5 = 7 1/2 / 5

3. Solve.

5t/5 = t and 7 1/2 /5 = 1 1/2

7.5 / 5 = 1.5

Therefore, your answer would be C. divide both sides by 5, and the answer is 1 1/2.

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inysia [295]

Answer:

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Step-by-step explanation:

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Dr. Mitchell owns a veterinarian clinic. For a week, he collected data during examinations on the kind of animal a boy or girl h
san4es73 [151]

Answer: A) A boy is 19% more likely than a girl to own a dog than a cat or other animal.

Step-by-step explanation:

Here are the options:

A) A boy is 19% more likely than a girl to own a dog than a cat or other animal.

B) A boy is 33% more likely than a girl to own a dog than a cat or other animal.

C) A boy is 50% more likely than a girl to own a dog than a cat or other animal.

D) A boy is 52% more likely than a girl to own a dog than a cat or other animal.

Boy with a dog = 27

Total animals owned by boys = 27+15+10 = 52

Probability of owning a dog = 27/52 = 0.5192

Girl with dogs = 18

Total animals owned by girls = 18+25+12 = 55

Probability of owning a dog = 18/55 = 0.3273

Therefore, 0.5192 - 0.3273 = 0.1919 = 19.19%

Therefore, A) A boy is 19% more likely than a girl to own a dog than a cat or other animal.

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Studentka2010 [4]

The answer to your question is,

B. Commutative Property

-Mabel <3

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