x=3/10

evaluate

y=5x^2-3x+4

y=5(3/10)^2 -3(3/10)-1(How do you evaluate this part, step by step)(This is the answer)

y=71/20

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- Nov 12th 2009, 11:30 AMCyberman86I need help evaluating this numbers
x=3/10

evaluate

y=5x^2-3x+4

y=5(3/10)^2 -3(3/10)-1**(How do you evaluate this part, step by step)**(This is the answer)

y=71/20 - Nov 12th 2009, 11:49 AMpickslides
Cyberman, please consider the following.

$\displaystyle y=5\left(\frac{3}{10}\right)^2 -3\left(\frac{3}{10}\right)+4$

$\displaystyle y=5\left(\frac{3^2}{10^2}\right) -3\left(\frac{3}{10}\right)+4$

$\displaystyle y=5\left(\frac{9}{100}\right) -3\left(\frac{3}{10}\right)+4$

$\displaystyle y=\frac{5\times 9}{100} -\frac{3\times 3}{10}+4$

$\displaystyle y=\frac{45}{100} -\frac{9}{10}+4$

To finish the problem you must create a common denominator

$\displaystyle y=\frac{45}{100} -\frac{90}{100}-\frac{400}{100}$

$\displaystyle y=\frac{45-90-400}{100} $

Now finish and simplfy. - Nov 12th 2009, 08:26 PMWilmer
- Nov 15th 2009, 11:41 AMpickslides
- Nov 15th 2009, 08:30 PMWilmer
- Nov 16th 2009, 11:37 AMpickslides
I think the poster should re-supply the question. (Thinking)

- Nov 16th 2009, 12:37 PMe^(i*pi)