256x²+² - x²y² + 49y²+²

Mathematics

1 answer:

ipn [44]2 years ago

3 0

$\\ \sf\longmapsto 256x^2y^2-x^2y^2+49y^2x^2$

$\\ \sf\longmapsto 256x^2y^2-x^2y^2+49x^2y^2$

$\\ \sf\longmapsto (256-1+49)x^2y^2$

$\\ \sf\longmapsto 304x^2y^2$

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Answer:

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Step-by-step explanation:

Let the total number of parrots be k.

If 20% (or 20/100 = 1/5) flew away and 5% (5/100 = 1/20) died, the remaining parrots will be k – (¹/₅k + ¹/₂₀k) = k – ¼k = ¾k.

Of the remaining, 45% (or 45/100 = 9/20) were sold, which means the total number of sold parrots will be ¾k × ⁹/₂₀ = ²⁷/₈₀k.

The remaining parrots = ¾k – ²⁷/₈₀k = ³³/₈₀k = 33

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Hi there!

Here is what the rules says

+ * + = + (Plus times plus = plus)
+*- = - (Plus times minus = minus)
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You need to know the rules by heart because you will use it a lot.

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So, we gonna use PLUS for the sign
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13 is the correct answer.

I hope I helped. Please let me know if you have more questions.

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