Using the quadratic formula to solve $7 x^2-x=7$, what are the values of $x$?

$\frac{1 \pm \sqrt{195} i}{14}$
$\frac{1 \pm \sqrt{197}}{14}$
$\frac{1 \pm \sqrt{195}}{14}$
$\frac{1 \pm \sqrt{197} i}{14}$

Doubling the radius of a **circle quadruples **the area and doubles the circumference. Tripling the radius increases the area nine times and triples the circumference. ;

Answered by JoanFontaine | 2024-06-18

Doubling the radius of a circle quadruples the area and doubles the circumference. Tripling the radius increases the area nine times. The circumference triples when the radius is tripled.
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Answered by JoanFontaine | 2024-10-01