First, you have to wait until 2 people answer your question. When you finally see 2 people, a crown will pop up on your browser. Then pick which ever person you want or the best answer. That's all you have to do.
The first and the difficult thing is you need to tell that
x^2-4xy+4y^2 = ( x - 2y )^2
so from question you know 3x - 6y = x - 2y = 9z
finial : ( x - 2y )^2 = ( 9z )^2=81z^2
so the answer is D . Hope this would help you .
Answer:
» 3y - 9 is equivalent to 3(y - 3)
Answer:
a(25) = 117
Step-by-step explanation:
First look at how the given terms behave:
From -3 to 2 is a jump of 5;
From 2 to 7 is a jump of 5;
From 7 to 12 is a jump of 5
Since there is a common difference, this is an arithmetic sequence.
The general formula for an arithmetic sequence is a(n) = a(1) + 5(n - 1).
Thus, a(25) = -3 + 5(25 - 1), or a(25) = -3 + 120, or a(25) = 117
