all you have to do is add up all the sides and your answer will be 21 cm
Answer:
-1/2 and 13/2
Step-by-step explanation:
The number of hardback books that are on the bookshelf is 29 books.
- Let the total number of books be T.
- Let the number of hardback books be H.
- Let the number of paperback books be P.
<u>Given the following data:</u>
- Total number of books = 36 books
To determine the number of hardback books that are on the bookshelf:
Translating the word problem into an algebraic expression, we have;
The total number of books is:

The number of hardback books is 15 more than <u>twice</u> the number of paperback books:

Substituting the given parameters into the formula, we have;

P = 7 books
For number of hardback books:

H = 29 books
Read more on word problem here: brainly.com/question/24604067
Answer:
(a−2b)6
Step-by-step explanation:
Use the Binomial Theorem. a6+6a5(−2b)+15a4(−2b)2+20a3(−2b)3+15a2(−2b)4+6a(−2b)5+(−2b)6