Answer:
9cm
Step-by-step explanation:
I guessed until I got the right answer
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:1.08
Step-by-step explanation:just multiply it together
The amount of substance unit is mol, the answer is c