Answer:

Step-by-step explanation:
-5+2(10b-2)=31
Expand brackets.
-5+20b-4=31
-9+20b=31
Add 9 on both sides.
20b=40
Divide both sides by 20
b=2
Answer:
7.34×10⁰
Unless you're missing something in your question then that'd be it I guess... There isn't really a reason to put 7.34 in scientific notation though, so I'm assuming something isn't loading for me (or the question was changed).
Answer:
I can helpyou with that but im not sure with it
Answer:
the answer is 56.00 dollars
Step-by-step explanation:
I did this
A. True
The sum of the distances round the shape is the Perimeter.