The expression will be x-3.
1/3 + 2/9 equals 3/9
3/9 is then simplified to 1/3 :)
Answer:
about 70 years
Step-by-step explanation:
Life expectancy (e) improves by 5.7 years every 10 years, so 5.7/10 = 0.57 years per year. For t years after 2009, it can be modeled by ...
e = 0.57t +80
We want to find when that is 120:
120 = 0.57t +80
40 = 0.57t
40/0.57 = t ≈ 70.2
About 70 years from 2009, humanity may achieve a life expectancy of 120 years.
Hello there!
8 - 2x = -8x + 14
Let's start by subtracting 8 to both sides
8 - 2x - 8 = -8x + 14 - 8
-2x = -8x + 6
Let's add 8x to both sides
-2x + 8x = -8x + 6 +8x
6x = 6
Divide both sides by 6
6x/6 = 6/6
x = 1
The correct answer is option D
I hope this helps!