An = a1 * r^(n-1)
a1 = first term = -5
r = common ratio = -4
so ur formula is : an = -5 * -4^(n-1) <==
Answer:
The answer to your question is the third choice.
Step-by-step explanation:
a) 6x - 5y = 8
12x - 10y = 16
We observe that these lines are the same so they have infinite solutions.
b)
7x + 2y = 6
14x + 4y = 16
These lines are parallel because they have the same slope, so they do not cross, there is no solution.
c)
8x - 3y = 10
16x - 6y = 22
These lines are parallel because they have the same slope, so they do not cross, there is no solution.
d)
9x + 6y = 14
18x + 12y = 26
These lines are parallel because they have the same slope, so they do not cross, they do not have an infinite number of solutions.
Answer:
The height of the parallelogram is 3 yards.
Step-by-step explanation:
A parallelogram has a base of 7 yards, and an area of 21 square yards.
The formula for the area of a parallelogram is A = bh.
So, to find h (the height), that formula becomes h = A/b
h = 21/7
h = 3
The height of the parallelogram is 3 yards.
(Work Check:
A = bh
A = 7 * 3
A = 21)
The set is not closed
Example:
-4 * -3 = 12 this is not a negative integer
