This has been melting my brain for a while..... any help? Or the answer lol.
q = 5 x 10 to the power of 23 and r = 2 x 10 to the power of negative 44. Whats qr?
$\displaystyle q=5\times 10^{23}$
$\displaystyle r=2\times 10^{-44}$
You can first multiply the coefficients together, and then combined the exponents, since they have the same base.
Therefore, $\displaystyle q\times r=5\cdot10^{23}\times 2\cdot10^{-44}=10\times 10^{23-44}=\dots$
Try to take it from here.
--Chris