Answer:
the answer is "D"
Step-by-step explanation:
The answer should be b. because 4(4) = 16 and that’s closer to 18.4 than the others.
The answer is 42kg/45kg or 14kg/15kg
1.Simplify.
-2{x}^{2}-4x+13+12{x}^{2}+2x-25−2x2−4x+13+12x2+2x−25
2.Collect like terms.
(-2{x}^{2}+12{x}^{2})+(-4x+2x)+(13-25)(−2x2+12x2)+(−4x+2x)+(13−25)
3.Simplify.
10{x}^{2}-2x-1210x2−2x−12
