Asidewalk is built 12 bricks wide by laying each brick side by side. how many inches wide is this sidewalk is each brick measures 3 7/8 inches wide?

To solve for the width simply multiply the two numbers:

width of sidewalk = 12 * (3 7/8)

Where 3 7/8 = 31/8

so calculating,

width of sidewalk = 12 * (31 / 8)

width of sidewalk = 46.5 inches

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