Answer: Caroline = 225
Step-by-step explanation:
Let Sarah be x
Caroline will be 3x
Bridget will be 2(3x) = 6x
x + 3x + 6x = 750
10x = 750
x = 750 / 10 = 75
Caroline gets 3x = 3 * 75 = 225
Answer:
i thinkt he answer would be 67
Step-by-step explanation:
Answer:
x = -45.
Step-by-step explanation:
-x - y = 30
-x - 15 = 30
x + 15 = -30
x = -45
To check we are correct...
-(-45) - y = 30
45 - y = 30
-45 + y = -30
y = 15
So, x = -45.
Hope this helps!
Answer: $12
explanation:
we know that 2 CDs and 6 DVDs cost $156 and 1 CD and 9 DVDs cost $210.
this gives us the equations:
2x + 6y = 156
and
1x + 9y = 210
where x is CDs and y is DVDs
multiply the top equation by 9 and the bottom by -6 to solve for x:
18x + 54y = 1404
-6x - 54y = -1260
add from top to bottom:
12x = 144
divide both sides by 12 to get:
x= $12
The answers are :
x-5 and x+1
