Answer:
x = 28/3
y = 7/3
Step-by-step explanation:
If the triangles are congruent, then corresponding sides are equal.
x = 4y
x + 1 = y + 8
Solve the system of equations using substitution or elimination. Using substitution:
4y + 1 = y + 8
3y = 7
Solving for x:
get the equation in slope intercept form
2x-3y=9
subtract 2x from each side
-3y = -2x +9
divide by -3
y = 2/3 x -3
slope = 2/3
y intercept = -3
x intercept set y=0 and solve
0 = 2/3 x -3
add 3 to each side
3 = 2/3 x
multiply each side by 3/2
9/2 = x
the x intercept is 9/2 or 4 1/2
jj
d 120 because 40% is 120
