Question

[DID I SOLVE THIS CORRECTLY????] Related Rates: a 20 foot ladder slides down a wall at 5. at what speed is the bottom slidng out when the top is 1o feet from the floor

Answer 1

I keep getting \[5\sqrt{3}\]

Answer 2

but it's none of my answer choices :'(

Answer 3

\[2a \frac{ da }{ dt }+2b \frac{ db }{ dt }= 0\]
\[2(10)(-5)+2(10\sqrt(3))\frac{ db }{ dt }\]

Answer 4

I like to draw a picture first.