Answer:
b = 4
r = 3
Step-by-step explanation:
r + b = 7
solve for 'r' to get r = 7-b
now substitute '7-b' for r in the second equation:
3.75(7-b) + 2.75b = 22.25
26.25 - 3.75b + 2.75b = 22.25
-b = -4
b = 4
r = 3
Answer:
First and last
Step-by-step explanation:
178
You add 85cm plus 258cm plus 13cm then you get the answer divide it by 2 you get
178cm
% increase = 100 * (final-initial)/initial
Plug in the values
Initial = 12,900, final = 28,300
100 * ((28,300-12,900)/12,900))
100 * (15400/12,900) = 119.38
Now round that to nearest whole number
Solution: 119% increase
