Solve the quadratic equation, rounding to thousandths when necessary: $0.16 x^ 2 = 0.25$
A) $x = \pm 1.25 i$
B) $x = \pm 0.8 i$
C) $x = \pm 1.5625$
D) $x = \pm 1.25$

Question

Solve the quadratic equation, rounding to thousandths when necessary: $0.16 x^ 2 = 0.25$
A) $x = \pm 1.25 i$ 
B) $x = \pm 0.8 i$ 
C) $x = \pm 1.5625$ 
D) $x = \pm 1.25$

Quizplus · Accepted Answer

To solve the quadratic equation $0.16x^2 = 0.25$, divide both sides by 0.16 to get $x^2 = \frac{0.25}{0.16}$. Simplifying the right side gives $x^2 = 1.5625$. Taking the square root of both sides gives $x = \pm \sqrt{1.5625}$, which simplifies to $x = \pm 1.25$.

Solve the Quadratic Equation, Rounding to Thousandths When Necessary 0.16x2=0.250.16 x^ 2 = 0.250.16x2=0.25

Solve the Quadratic Equation, Rounding to Thousandths When Necessary $0.16 x^ 2 = 0.25$