Question

solve the equation M=19r^2h/11 for r in terms of M and h. assume r=M and h are all positive

Answer 1

\[M = \frac{19r^2 h}{11}\]
first, multiply both sides by 11
\[\implies 11M = 19r^2 h\]
now divide both sides by 19
\[\implies \frac{11M}{19} = r^2 h\]
now divide both sides by h
\[\implies \frac{11M}{19h} = r^2\]
finally.. take the square root to get r

does that help?

Answer 2

yes, thanks

Answer 3

welcome

Answer 4

help in this one solve 3z+3t=b-1 for z

Answer 5

first subtract both sides by 3t
\[\implies 3x = b - 1 - 3t\]
now divide both sides by 3

Answer 6

so it will be z=b-1-t