Both expression have the same denominator: 9x²-1. Thus it must not be 0.
9x²-1=(3x-1)(3x+1)=0, resulting x=+-1/3.
Restrictions: x in R\{-1/3, 1/3}
Adding those expressions:
E=(-x-2)/(9x²-1 ) + (-5x+4)/(9x²-1)=
(-x-2-5x+4)/(9x²-1)=(-6x+2)/(9x²-1)=
(-2)(3x-1)/(9x²-1)=-2/(3x+1)
E=-2/(3x+1)
Answer:
1/8
Step-by-step explanation:
I already answered that question, here's the link:
brainly.com/question/10534199.
But if you still want the explanation, here it is:
"So if we want to measure probability, you have to add, then divide, like this:
First

, which gives us 18.
Then we see, that 6 is 1/3 of 18, so we conclude.
The answer is 33.33%.
Hope this helped!"
Answer:
Convert fraction (ratio) 7 / 30 Answer: 23.333333333333%
Step-by-step explanation:
Answer:
8 piece shaded for the first one one
2 piece shaded for the second one
Step-by-step explanation:
You said 9/8 so 8 pieces shaded out of 9
You said 2/4 so 2 piece shaded out of 4