Y=mx+b
6x+2y=-88
2y=-88-6x
y=-44-3x
y=-3x-44
m is the slope
b is the y-intercept
(4x-7y)(4x+7y)
4x times 4x= 16x^2
-7y times 7y= -49y^2
The sum of the first n terms in a geometric sequence given the first term (a1) and the common ratio (r) is calculated through the equation,
<span>Sn </span>= (<span><span><span>a1</span>(1−<span>r^n</span>) / (</span><span>1−r)
Substituting the known terms,
Sn = (20)(1 - (1/4)^4)) / (1 - 1/4)
Sn = 26.5625
Thus, the sum of the first four terms is 26.5625. </span></span>
Answer:
8
Step-by-step explanation:
First you subtract 20 by 4. Then you get 16. 16 divided by 2 gets you 8. 8 is the answer.
Hope this helps dude
