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valentina_108 [34]
3 years ago
10

Solve the following equation for n 18n^2-50=0

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0

18n^2-50=0\ \ \ |+50\\\\18n^2=50\ \ \ |:18\\\\n^2=\dfrac{50}{18}\\\\n^2=\dfrac{50:2}{18:2}\\\\n^2=\dfrac{25}{9}\to n=\pm\sqrt{\dfrac{25}{9}}\\\\n=\pm\dfrac{\sqrt{25}}{\sqrt{9}}\\\\\boxed{n=-\dfrac{5}{3}\ \vee\ n=\dfrac{5}{3}}

Used:\\\sqrt{\dfrac{a}{b}}=\dfrac{\sqrt{a}}{\sqrt{b}}

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Change the fraction 5/2 to percent
kap26 [50]

[ Answer ]

\boxed{250 \ Percent}

[ Explanation ]

  • Change \frac{5}{2} To Percent

-------------------------------------

\frac{5}{2} Is The Same As 5 ÷ 2

  • Divide

5 ÷ 2 = 2.5

  • Convert Decimal To Percentage

2.5 · 100 = 250

  • Final Answer

250%

\boxed{[ \ Eclipsed \ ]}

4 0
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Let mA = 40°. If B is a complement of A, and C is a supplement of B, find these measures.
nasty-shy [4]
If B is a complement of A this means that the sum of the measures of A and B is 90 degrees.
             
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Thus, the measure of angle B is 50 degrees. 

If C is a supplement of B then, the sum of the measures of B and C is 180 degrees. 
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Therefore, the measure of angle C is 130 degrees. 
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Ben is saving 1/5 of his weekly pay to buy a car. Right and solve an equation to find what weekly pay W results in savings of $6
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To solve this problem, all we have to do is to closely analyze the situation. Now we are given that the amount of saving per week is equivalent to one fifth (1 / 5) of Ben’s weekly pay (or weekly salary).

Now we are to find the weekly pay or weekly salary that result in weekly savings of $61.50. So we can see that actually the value of 61.50 is one fifth (1 / 5) of W, therefore:

(1/ 5) W = 61.50

W = 5 * 61.50

W = $307.5

 

<span>Therefore a weekly pay of $307.5 will result in a weekly savings of $61.50</span>

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