80% of quizzes + 20% of final = final grade
80% * 73 + 20% * x = 70
0.8 * 73 + 0.2x = 70
58.4 + 0.2x = 70
0.2x = 11.6
x = 58
N(2n+6)-(n²-1)= 2n²+6n-n²+1=n²+6n+1
Answer:
in my opinion I think the answer is a because I don't know why
Step-by-step explanation:
Answer: -2x (x+3) (x+2)
Step-by-step explanation:
Answer:
hundred thousand, ten thousand, thousand, hundreds, tens, and ones
Step-by-step explanation:
