Answer:
75
Step-by-step explanation:
did it 5 mins ago
2x+3x= 5x
5-7= -2
so its 5x-2 since all like terms are added
Answer:
60 feet
Step-by-step explanation:
We know that a triangle has 3 sides, in this case we will call them a, b and c.
It tells us that everything is material, it measures 20, that is:
a + b + c = 20
They tell us that she wants to triple each side and to know how much material she would need in total. Then it would be:
border material need = 3 * a + 3 * b + 3 * c
common factor 3:
border material need = 3 * (a + b + c)
border material need = 3 * 20
border material need = 60
Which means that she needs a total of 60 feet of material.
7y+3=10y+9
-3 -3
7y=10y+6
-10y -10y
3y=6
Y=2
