D. 75 cm
Step-by-step explanation:
fill in the y with 20.5, so you get 20.5=0.3x-2. Add the 2 to the 20.5 so you get 22.5=0.3x. Divide both by 0.3 to get 75=x.
sorry if it's a bd explanation, hope this helps :)
So we can get from these two equations that y = 6x + 2 = 6x + 9
6x + 2 = 6x + 9
0 = 7 , but that's incorrect, so this set has no solution.
Th e answer is 5.5
...........
2|3x + 5| = -10 . Divide both sides by 2:
|3x + 5| = -5 ===>3x+5=-5 & -3x-5=-5 In both cases x=0
