I don't understand the attached problem. Can someone help me get this started?
Hello, igottaquestion!
135) A sloping ramp is to be built with vertical supports at $\displaystyle B,C,D$ as shown.
The supports at $\displaystyle A$ and $\displaystyle E$ are 11 and 17 ft, respectively.
How high must the supports be at point $\displaystyle B,C,D$ ?
Code:o - * | : o | : * | | : * | | : o | | : * | | | 6 * | | | : * | | | : o | | | : * | | | | : o | | | | - | | | | | : | | | | | : | | | | | : 11 | | | | | 11 | | | | | : | | | | | : | | | | | : o - - o - - - - - o - - - -o- - -o - A 12 B 30 C 18 D 12 E x = 12 42 60 72
Placing $\displaystyle A$ at the origin,
. . the equation of the ramp is: .$\displaystyle f(x) \:=\:\tfrac{1}{12}x + 11$
$\displaystyle \text{At }B\!:\;f(12) \:=\:\tfrac{1}{12}(12) + 11 \:=\:12$
$\displaystyle \text{At }C\!:\;f(42) \:=\:\tfrac{1}{12}(42) + 11 \:=\:\tfrac{29}{2}$
$\displaystyle \text{At }D\!:\;f(60) \:=\:\tfrac{1}{12}(60) + 11 \:=\:16$