X + y + z = 27
x = 2z
y = 3 + z
2z + 3 + z + z = 27 ; 4z = 24; z = 6 youngest
x = 12 oldest
y = 9 middle one
X= 78
Y=115
Because x + 102 = 180
Y is the same as the angle on the line below, since they are parallel
Divide any term by the one before it, and you'll get the ratio. -20/4=-5
C.21 ft x 48 ft
because you multiply 7 by 3 and 12 by 3 and that is what it is
You used a ruler........................................?
