Answer:
30 lb/pounds
Step-by-step explanation:
used an online conversion
If 81=n-3(-5+4n)
81= n+15-12n
81= -11n+15
-11n=81-15
-11n=66
n=-6
Answer: 3rd one
Rearrange the original equation so it fits the model of : ax^2+bx+c=0
Then use the quadratic formula to find all possible answers.
Answer:
Uhh
Step-by-step explanation:
Jhbnhhnmjh