So 9 students = 25% (100%-75%=25%)
100 : 25 = 4
4 * 9 =
36 students
Answer:It's 12 and 43
Step-by-step explanation:
Answer: a + 4
explanation: sum means what comes from two numbers being added. so you just need to add a and 4
Answer:
x = 4
y = -2
Step-by-step explanation:
x + 10y = -16
-x -4y = 4 <-- ( multiplied x+4y=-4 with -1 so the x's cancel)
6y = -12
y = -2
put -2 back in the equation to get x
x + 10y = -16
x -20 = -16
x = 4
