Espanol Three boards are placed end to end to make a walkway. The first board is 2 feet 11 inches long, the second board is 5 feet 10 inches long, and the third board is
4 feet 7 inches long. How long is the walkway?
Write your answer in feet and inches. Use a number less than 12 for inches.

13 feet and 2 inches.

Step-by-step explanation:

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c