To divide by decimals, put the decimal right where it is above it, and you just do regular dividing
Answer:
D) b = 
Step-by-step explanation:
First, move all the terms that do not include b to the left side with S:
S = 2ab + 2bc + 2ac
S - 2ac = 2ab + 2bc
Now, factor out 2b from the right side:
S - 2ac = 2b(a + c)
Divide both sides by 2(a + c):
b = 
Finally, multiply out the denominator:
b = 
You can use desmos! and to solve you find the point(s) where they overlap
Answer:
x = 7cm
Step-by-step explanation:
