Answer:
Step-by-step explanation:
Add the total number of students:
Boys: 8, + Girls: 12 = 20 students
of the students are girls
6/10 also equates to 60%, which is the percent of girls in the class.
Answer:C
Step-by-step explanation: move decimal to left twice
5x+7y+11=-11+11
5x+7y+11=0
5x-3y-19=19-19
5x-3y-19=0