40 + 30s = 220
30 for each student (s) and the one charge of 40 would get the tutor 220 dollars.
Q represents how many they did NOT recieve
380-127= 253
Now let's check
380-253= 127
CHECK
So q represents 253(the number of invitations they did NOT recieve)
Hope this helps!
Answer:
x = -3/2
Step-by-step explanation:
4x² + 12x + 9 = 0
Use AC method to factor, or recognize the perfect square.
(2x + 3)² = 0
2x + 3 = 0
x = -3/2
Answer:
Step-by-step explanation:
i) z = -32
ii)
Answer:
My answer is C
Step-by-step explanation:
I know how to use a graph kind of but I have trouble of calculating and stuff like that.