Write an expression for 213 increased by d: 
Answer:
40 classrooms
Step-by-step explanation:
Divide 1200 by 30.
1200÷30=40
If 390 students are boys just subtract 390 from 1200.
1200-390= 810
There must be 810 girls if there are 390 boys
Answer:
70%
Step-by-step explananation:
sorry for the previous answer I was thinking u meant something else
Answer:
14.64
Step-by-step explanation:
A negative times a negative equals a positive and there are 2 decimal places.