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harina [27]
3 years ago
14

Fifteen times the square of a non-zero number is equal to 20 times number.What is the number? Its not 4/3

Mathematics
1 answer:
e-lub [12.9K]3 years ago
4 0
The number is (2√3) / 3

To find the missing number, convert what it says in words to an equation:
15 {x}^{2}  = 20x
Divide both sides by 15:
{x}^{2}  =  \frac{20}{15}   \\  \\  {x}^{2}  =  \frac{4}{3}
Take the square root:
x =  \sqrt{ \frac{4}{3} }  \\  \\ x =  \frac{2}{ \sqrt{3} }  \\  \\ x =  \frac{2 \sqrt{3} }{3}
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