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Bond [772]
3 years ago
7

What is an equivalent expression for 2.50(600-500*.25)-500?​

Mathematics
1 answer:
Nonamiya [84]3 years ago
8 0

Answer:

687.5

Step-by-step explanation:

To find the equivalent expression, simplify the operations using order of operations.

2.50(600 - 500*.25) - 500                Multiply -500*0.25

2.50(600 - 125) - 500                        Subtract 600 - 125

2.50(475) - 500                                 Multiply 2.50(475)

1187.5 - 500                                       Subtract

687.5

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\sqrt{x^2+x-2}+\sqrt{x^2-4x+3}=\sqrt{x^2-1}\\
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x=1 \vee x=\sqrt{\dfrac{28}{3}} \vee x=-\sqrt{\dfrac{28}{3}}\\

There's one more condition I forgot about
-(x-2)(x-1)\geq0\\
x\in\langle1,2\rangle\\

Finally
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\boxed{\boxed{x=1}}
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