Answered

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If k is an integer and r = k2 + 3k + 9, which of the following statements about r must be true for all values of k?
A. r is even
B. r is divided by 3
C. r is the square of an integer
D. None

Sagot :

sqdancefan

9514 1404 393

Answer:

  D. None

Step-by-step explanation:

If one of these is true for all values of k, we can see it for k=1.

 r = 1² +3·1 +9 = 13

This value is not even, not divisible by 3, and not the square of an integer.

None of the offered statements about r is true.

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