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shusha [124]
2 years ago
7

9) 80 is 20% of what number?

Mathematics
2 answers:
sweet-ann [11.9K]2 years ago
8 0
<h3><u>Answer:</u></h3>
  • 400 is the number.
<h3><u>Step-by-step explanation:</u></h3>

<em>There can be many ways to find the number.</em><em> I have found the number with the help of fractions and multiplication. </em><em>Below is the solution to your problem.</em>

  • 80 = 20/100
  • => 5 x 80 = 20 x 5/100
  • => 400
<h3><u>Conclusion:</u></h3>

<em>Hence, 80 is 20% of 400. </em><em>I hope my method helped you.</em>

BrainiacUser1357

stealth61 [152]2 years ago
7 0

Answer:

it would be 400

Step-by-step explanation:

80/X = 20/100

CROSS MULTIPLY - 80 x 100= 8,000

<h3>8,000 divided by 20 is 400</h3>
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Answer: y = 3x^{2} - 2x + 2

Step-by-step explanation:

The equation in standard form of a parabola is given as :

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This means that :

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Starting with the first one , we have :

y = ax^{2}  + bx + c

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Therefore :

4a - 2b + c = 18 ................ equation 1

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2 = a (0) + b ( 0) + c

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Therefore

16a + 4b + c = 42  ........... equation 3

Combining the three equations we have:

4a - 2b + c = 18 ................ equation 1

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Solving the resulting linear equations:

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2a - b = 8 ............... equation 4

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16a + 4b + c = 42

16a + 4b + 2 = 42

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4a + b = 10 ................ equation 5

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2a - b = 8 ............... equation 4

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a = 3 , b = -2 and c = 2

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