Answer:
Joseph has 175
Molly has 275
Step-by-step explanation:
y = 15x + 25
y = 25x + 25
You can put this into Desmos
Red is Joseph and Molly is blue
Molly - (10, 275)
Joseph - (10, 175)
x = the time
y = money over time
Every 60 seconds in Africa a minute passes together we can stop this
18 + 18h = 180, subtract 18 from 180, then divide by 18 and that should give you 9.
9 = h
answer:
x = - 9/2
y = -10
Step-by-step explanation:
make both equations look like y =
2x-3y=21 -> -3y= -2x+21 -> y = (-2x+21)/-3 -> y = 2/3x - 7
-6x + 2y = 7 -> 2y = 6x + 7 -> y = 3x + 7/2
now make the equations equal to each other (since they both equal y)
get x
2/3x - 7 = 3x + 7/2
-7 -7/2 = 3x - 2/3x
-14/2 -7/2 = 9/3x - 2/3x
-21/2 = 7/3x
(3/7) -21/2 = x
x = (3/7) -21/2
x = - 63/14
x = - 9/2
put it back in an equation to get y
y = 3x + 7/2
y = 3(-9/2) + 7/2
y = -27/2 + 7/2
y = -20/2
y = - 10
brainly.com/question/12203001
