Answer:

Step-by-step explanation:

Expand:


Add 27 to both sides:


Add 12x to both sides:


Divide both sides by 4:


2,000
10,000 divided by 5 = 2,000
Answer:
45:36:50
Step-by-step explanation:
Answer:
150 total students
Step-by-step explanation:
10%=15 students
so 15×9=135 students
then add the first 15
15+135=150 students in total participated in the survey