2= 1.41421 = irrational
2.5=rational
.4=rational
-4/5 = -.8 = rational
16= 4 =rational.
The correct option is D (-∞,-3)∪(-1,1)
Step-by-step explanation:
Given,
≤ 0
To find the solution.
The solution could be found if
≤ 0 and
3x+9 ≠ 0 [if the denominator is 0, it gives ∞ as solution]
Now,
≤ 0
or, (x+1)(x-1) ≤0
or, x ≤1 and x≤-1
Both of the above condition holds is x≤1
Again,
3x+9≠0
or, x≠-3
All the conditions gold for the values (-∞,-3)∪(-1,1)
Hence the correct option is D.
A
The two equations are parallel. They have the same slope. You get two lines that never meet. The y intercept is -6 for the first one and + 6 for the second one.
B
Mutliply the second equation by 2
2(1/2y = -4x - 3)
y = -8x - 6
The two equations do not differ at all. There are an infinite number of solutions.
C
The slopes are different. One is plus 8 and the other is minus 8. These two equations will meet at exactly 1 point.
D
If you multiply the whole equation by - 1 you get the same thing as the first set of equations.
-1(-y = 8x +6)
y = -8x - 6
C<<<< Answer
Answer:
As Doris Day said: Good morning to you
Answer 27/2
Step-by-step explanation: