Answer:
B
Step-by-step explanation:
x=7
6x +2y=48
Let y=3
6x+2(3) = 48
6x+6 = 48
Subtract 6 from each side
6x+6-6=48-6
6x= 42
Divide by 6
6x/6 = 42/6
x = 7
21
my teacher said so
a. isosceles
b. isosceles
c. scalene