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wish on a star
wish on a star asked in Science & MathematicsMathematics · 1 decade ago

Solve the open sentence.?

1. 1+2y<-9 or 1+2y>9

2. -8 ≤ -2x≤6

1 Answer

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  • James L
    Lv 5
    1 decade ago
    Favorite Answer

    1. 1 + 2y < -9 => 2y < -10 => y < -5

    1+2y > 9 => 2y > 8 => y > 4

    so the solution is (-infinity,-5) union (4,infinity)

    2. -8 <= -2x <= 6 => 4 >= x >= -3

    so the solution is [-3,4]

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