Assuming you mean y=10x+150 and y=20x+115, you need to use a simultaneous equation, because you have two equations with two unknowns (x and y)
rearrange so
10x-y=-150
20x-y=-115
multiply the top by -1, so that if we add the two lines together, the y will cancel out
-10x+y=150
20x-y=-115
add the two lines together
10x=35
x=3.5
so the time is 3 and a half weeks
then we can sub in x to find y
20x-y=-115
20(3.5)-y=-115
70-y=-115
-y=-185
y=185
so 185 tickets were sold !
you can sub these values into your original equations to check your answer :)
18b - 24c because you multiply the outside with everything inside
Answer:
25m?
Step-by-step explanation:
I mean I'm not sure what the question is asking for but after 25 months he won't have any money left lol hope that helped ♡
Answer:
r=8
Step-by-step explanation:
Because 16 divided by 2 is 8