the thickness of book varies directly with the number of pages ,a book is 1.8
t = kp
no idea what "a book is 1.8" means
Please answer
I apologize, but it seems that part of your question is missing. Could you please provide more information or rephrase your sentence?
To find the thickness of the book, you need to know the relationship between the thickness and the number of pages. In this case, the thickness varies directly with the number of pages, which means that as the number of pages increases, the thickness of the book also increases.
Let's assume the number of pages in the book is represented by 'x', and the thickness of the book is represented by 'y'. We can write this relationship mathematically as:
y = kx
where 'k' is the constant of variation. In this case, we need to find the value of 'k'.
We are given that a book is 1.8 units thick. Let's assume that the book has 100 pages, so we can substitute these values into the equation:
1.8 = k(100)
Now, we can solve for 'k' by dividing both sides of the equation by 100:
1.8/100 = k
Simplifying the equation:
0.018 = k
So, the constant of variation is 0.018. This means that for every page added to the book, the thickness increases by 0.018 units.
Now, if you want to find the thickness of a book with a different number of pages, simply multiply the number of pages by the constant of variation:
Let's say the book has 200 pages:
thickness = 0.018 * 200 = 3.6
Therefore, the thickness of a book with 200 pages would be 3.6 units.