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Zinaida [17]
2 years ago
7

Proportions in triangles. Solve for X

Mathematics
1 answer:
Irina-Kira [14]2 years ago
5 0
X/2x+5=x-2/2x-1
X(2x-1)=(2x+5)(x-2)
2x²-x=2x²-4x+5x-10
-x+4x-5x=-10
-2x=-10
X=5



Then x=5
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Correct option is (C)

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\frac{30}{60}t+\frac{45}{60}s\leq   18\\\text{Multiply both the sides by 60}\\30t+45s\leq 1080\\\text{Divide both the sides by 45}\\s+0.66t\leq 24\\\text{Subtract 0.66t from both the sides}\\s\leq 24-0.66t

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Further it can be written as

t+s\geq 12\\\text{Subtract t from both the sides}\\s\geq 12-t

Also Tim can not design more than 30 items in one day, so we can write

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