Answer:
4
Step-by-step explanation:
Answer:

Step-by-step explanation:
3(x - 4) = 11x
Expand the brackets:
3x - 12 = 11x
Subtract 3x from both sides to isolate the -12:
3x - 12 = 11x
3x - 3x - 12 = 11x - 3x
-12 = 8x
8x = -12
Divide both sides by 8:

Simplify fraction:


Hope this helps!
Wow… how is this a question? .-.
Answer: +/-
= s
Step-by-step explanation:
A= S^2
then square root both sides

+/-
= s
Answer:
10.5; 13.5
Step-by-step explanation:
7:8:9=_:12:_
8 is corresponding to 12
12/8=1.5
8*1.5=12
So, multiply 7 & 9 by the same value (1.5) to get the answer.
7*1.5=10.5 or 10 1/2
9*1.5=13.5 or 13 1/2
The ratios are:
7:8:9=10.5:12:13.5
The blank spaces are 10.5 and 13.5 respectively.
Hope this helps ;)