The average amount each student must've put in is 37 marbles.
You find this by dividing the total amount by the number of students
Step-by-step explanation:
(-3+3i) - (8 – 9i)
-3+3i - 8 + 9i
-11+12i
Answer: 20.5
Form your equation. The formula for perimeter is (2l)(2w) or l + l + w + w, where l = length and w = width.
(l - 5) + (l - 5) + (l) + (l) = 72
Simplify and solve your equation.
4l - 10 = 72
4l = 82
l = 20.5
Since l = length, length = 20.5 and width = 15.5
You can check your work, too:
20.5 + 20.5 + 15.5 + 15.5 = 72
Answer:
3
Step-by-step explanation:
We can use the slope formula
m = ( y2-y1)/(x2-x1)
= ( -9 -0)/(4 - 7)
= -9/-3
= 3