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barxatty [35]
3 years ago
11

Please help me idk this ????

Mathematics
2 answers:
Daniel [21]3 years ago
4 0

Answer:

40/400= 10%

10/100= 10%

Step-by-step explanation:

dolphi86 [110]3 years ago
3 0

Answer:

40/100 but 10 percent of 400 is 40.

Step-by-step explanation:

The answer is 40 because all you have to do is figure out what number is equal to 10/100.

So:

10    times 4=      40

__        =             ___

100   times 4=     400

Answer for the bottom is 40/100, but 10% of 400 is 40.

Hope this helps, have a good day. c;

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Step-by-step explanation:

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if alpha and beta are the roots of the equation 3x^2-9x+2=0 find the values of: (I) alpha ×beta + alpha^2 × beta. (ii) alpha^2-a
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Answer:

in steps

Step-by-step explanation:

The question did not state if alpha>beta or alpha<beta, so the answer will have 2 answers  for each questions

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x = (-(-9) ± √(-9)²-4*(3)*(2)) / (2*3)

x = (9 + √57) / 6   or x = (9 - √57) / 6      (alpha and beta) or (beta and alpha)

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   = ((9 + √57) / 6) ((9 - √57) / 6) (1 + (9 ± √57))  

   = ((9² - (√57)²)/36) (10 ± √57)

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(ii) alpha²-alpha×beta+beta² = a² -2ab + b² +ab = (a - b)² + ab

if a is alpha    

=​ ((9 + √57) / 6) - ((9 - √57) / 6)) + ((9 + √57) / 6) ((9 - √57) / 6))  

    = √57/3 + 2/3

     = (√57 + 2) / 3

if a is beta

((9 - √57) / 6) - ((9 + √57) / 6)) + ((9 - √57) / 6) ((9 + √57) / 6))  

    = - √57/3 + 2/3

     = - (√57 + 2) / 3

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Step-by-step explanation:

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