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luda_lava [24]
3 years ago
13

30 POINTS!!! PLEASE HURRY!!Which of the following graphs correctly represents x > -1/2

Mathematics
1 answer:
miss Akunina [59]3 years ago
7 0
<h3>Answer: Second graph</h3>

Why? Because we draw a dashed line through x = -1/2 = -0.5 on the horizontal number line (aka x axis). Then we shade to the right of this dashed line. The shaded region represents all points that make the inequality true. For example, the point (0,0) is in the shaded region. It has an x coordinate of x = 0 which is larger than -1/2

Side note: the dashed line says "points on this boundary do not count as solutions". So any point with an x coordinate of -1/2 does not count.  

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Let us denote the number of tiles by T.

In the first store, if Darin bought T tiles, he would need to spend:
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For the cost to be the same at both stores, it means (measured in $)
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Let's check. If he buys 60 tiles in the first store, he spends:
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If he buys 60 tiles in the second store, he spends:
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∴ Darin needs to buy 60 tiles for the cost to be the same at both stores.
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