First, you need to distribute the right side of the equation : 8n - 2
Now the equation is : 20 - 7n = 8n - 2
Add 2 to both sides : 22 - 7n = 8n
Add 7n to both sides : 22 = 15n
Divide both sides by 15 : ( I had to round this one) 1.5 = n
Answer:
Step-by-step explanation:
x²-12x+(-12/2)²=x²-12x+36=(x-6)²
Answer:
424 grams for the small one and 510 grams for the big one.
Step-by-step explanation:
Nice profile picture.
C2 + a = 81.5
2ac = 9
B2 - 5c = 180
let me know if you need the work