The smiths want to replace the stairway that leads from their porch to their sidewalk with a ramp. the porch is 3 feet off the ground. they decide to start the ramp 12 feet away from the base of the porch to make it convenient to walk up.

a²+b²=c²

3²+12²=c²

3²=9

12²=144

√153

12.36931688 or 12.4

hope this helps

hes corect did the test

Step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.