Answer:
Step-by-step explanation:
Let
x-----> the total students in the marching band
Applying proportion
1
if the boys go in front and the girls go in the back there is only one way to put them
Answer: 40.
Answer: #13 you need to know that the sides are equal. #14 (7,6)
Step-by-step explanation: #14 in picture
Step-by-step explanatioihhin: