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spin [16.1K]
3 years ago
11

Which value of y makes the inequality 3y^2 +2(y-5)>8 true?

Mathematics
1 answer:
Alex3 years ago
4 0

Answer: D

Step-by-step explanation:

A) 3*0^2+2(0-5)>8

-10>8 -> not true

B) 3*(-1)^2+2(-1-5)>8

3*1+2*(-6)>8

3- 12>8

-9> 8 -> not true

C) 3*(-2)^2+2(-2-5)>8

3*4+2*(-7)>8

12-14>8

-2> 8 -> not true

D) ) 3*(-3)^2+2(-3-5)>8

3*9+2*(-8)>8

27-16>8

11> 8 -> true

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Answer:

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Step-by-step explanation:

Let the length of the plaing area is L and the width of the playing area is W.

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So, the area is maximum if the length is 200 m and the width is 400 m.

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