We just need to substitute in 6 whether we see an x:
(7*6) - 4*(6-6) + 12
= 42 - 4*0 + 12
=54
A graph shows the x-intercepts to be x ∈ {1, 4, 7}.
These are the real solutions to the equation.
Given:
The geometric sequence is
To find:
The sum of first 8 terms of the given geometric sequence.
Solution:
We have,
Here, the first term is 4 and the common ratio is
The sum of first n terms of a geometric sequence is
Where, a is the first term and r is the common ratio.
Putting n=8, a=4 and r=-3, we get
Therefore, the sum of first 8 terms is -6560.
2x-y=-1 (1)
3x-2y=1 (2)
(1) * 2--> 4x-2y=-2 (3)
(3) - (2)
x= -3
sub x= -3 into (1)
2(-3)-y=-1
-6-y=-1
-y=5
y= -5
Answer:
yeah its parallelogram.
quadrilateral whose diagonal bisect each other are parallelogram .