Answer:
First 15+4 which equal 19 and then multiply by 3 which equal 57
Step-by-step explanation:
There is no graph to tell
Answer:
50•x
Step-by-step explanation:
x=number of flags
50 times the number of United states flags
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 = 