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den301095 [7]
1 year ago
14

Is 12 a solution to the equation × - 8 = 20? Explain how you know.

Mathematics
1 answer:
jeyben [28]1 year ago
5 0

We have the following:

x-8=20

solving for x

\begin{gathered} x=20+8 \\ x=28 \end{gathered}

The solution of x is equal to 28, therefore 12 is not a solution of the equation

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Paha777 [63]

Answer:

80 parrots were purchased.

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

k = 33 × ⁸⁰/₃₃ = 80 parrots were purchased.

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3 years ago
What is y+1=5/6(x-2) in standard form?
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2 years ago
Solve for the indicated variable in this literal equation: <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Ba%7D%7Bb%7D%3Dc%20%20"
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a/b=c

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3 years ago
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