Y=5-2x
x^2 + (5-2x)^2 = 25
x^2 + 25-20x+4x^2 = 25
x^2 +4x^2-20x+25=25
5x^2 -20x=0
x=0 and y=5
Answer:
8, 13, 21
Step-by-step explanation:
This is a part of the Fibonacci sequence. it is where you add the two previous numbers together to get the third.
<u><em>Ex. </em></u>
<u><em>1+1 = 2</em></u>
<u><em>1+2 = 3</em></u>
This is a geometric sequence, so use the formula for the sum of a geometric sequence:
Sum = (a(r^n - 1))/(r - 1)
where a is the first term, -5
r is the common ratio, 5
and n is the number of terms
Thus,
Sum = ((-5)(5^6 - 1))/(5-1) = -19530
So is this just a free answer or?
