Question

What is the solution of the equation? 3x²=100

a: -9\25, 9\25
b: -3\5, 3\5
c: -25\9, 25\9
d: -5\3, 5\3

Answer 1

x = 10/sqrt(3)

Answer 2

3x² = 100
x² = (100/3)
\[x = \pm\sqrt{\frac{ 100 }{ 3 }} = \pm\frac{ \sqrt{100} }{ \sqrt{3} } = \pm\frac{ 10 }{ \sqrt{3} } = \pm\frac{ 10\sqrt{3} }{ 3 }\]

Answer 3

@DDCamp how would I do that with no graphing calculator?

Answer 4

graphing?

Answer 5

you just need mental math

Answer 6

well I don't know the sqrt of 33.33