Answer:
9 textbooks!
Step-by-step explanation:
Rucksack can hold = 6kg
Mass of textbook = 680g
So, here we need to show the division for finding the number of textbooks it can hold.
680 g in KG's = 0.68
Now, 6/0.68
That is 8.82 ( Round off = 9 textbooks)
We want 4/5 of a number to be 144. This means that

Multiplying both sides by 5/4, we have

Question 14 is (1,4)
15 rectangle
hope I helped
Oof your computer is broke broke can’t help
Answer: 5 feet of wood for 2.23
because the unit rate for each foot of wood is .45 compared to getting 6 feet for 2.95. 2.23 plus .43 (the cost for one foot) would be 2.63 making the wood much cheaper than the 6 foot option.