Answer:
6(2 + 2/3x) = 12 + 4x
Step-by-step explanation:
...............
Answer:
[-1, 3, 9]
Step-by-step explanation:
when x = 2: 4-5 = -1
when x = 4: 8-5 = 3
when x = 7: 14-5 = 9
(7b-9)(7b+9)
explanation:
I learned in math last year
-1 1/8 because -9/8 is equal to 
so just make it a improper fraction, pretend the negative is not there then add the negative at the end
-hope this helps :D
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.
