Photo????? i need more context:)
Step-by-step explanation:
×/21 x ×/21 = 7× x/21
x= 1/3
Answer:
C. 6/35
Step-by-step explanation:
Answer:
The cost of hardbook is $9 and cost of paperback is $5.
Step-by-step explanation:
Let x be the price for hardback book and y be the price for paperback book.
Mr. Yamamoto purchased 42 new hardcover books and 64 new paperback books, which cost a total of $698.
We can write the equation as:

He also purchased 42 new hardcover books and 58 new paperback books, which cost a total of $668.
We can write the equation as:

We have to use the elimination method to solve the two equations.
We eliminate x by subtracting the two equations.

Thus, the cost of hardbook is $9 and cost of paperback is $5.
Round the numbers to the nearest whole tens
625 close to 630
248 is close to 250
630-250= 380
The estimated difference is 380.
Hope this helps!