Math Quiz: Andrew Ross

$x^2+x-20=(x-4)(x+5)$
$10.5(1+r)^{30}$
$({6.71\times 10^8})\times(2.3\times 10^{-4})\approx 1.54\times 10^5$
$\pi L(1-\alpha)R^2 = 4 \pi \sigma T^4R^2$
$56mi \times \frac {1.61km}{1km} \approx 90km$
\[56mi \times \frac {1.61km}{1km} \approx 90km\]
$$10,000,000 \times (0.98)^{100} \approx $1,300,000$
$7,681,118,346 \approx 7,700,000,000 = 7.7 \times 10^{9}$
\[150 m \times \frac {4.5\times10^6 kg}{1 sec} \times \frac {10 J}{1 kg \times 1 m} = 6.75 GW\]

This entry was posted in Math Quiz. Bookmark the permalink.