Answer:
-9
Step-by-step explanation:
-3x+y=-7
-3x+y-2
-7-2=-9
8x - amount of boys
7x- amount of girls
8x + 7x = 195
15x= 195 ( divide by 15)
x= 13
8x = 8 x 13 = 104
7x = 7 x 13= 91
there are 104 boys, and 91 girls.
The answer is a) 1500 because when you divide 675 (the given number of students that cheated on 1 to 7 courses) by 1500 you get .45 or 45%.
Answer:
Algebraic expression ;

Step-by-step explanation:
4 is subtracted from r means the same as r decreased by 4
Subtracted = -
