Mary is reading a book that has 135 pages. she can read 18 pages in an hour.
if she takes h hours to finish reading the book, the equation that can be used to find the value of h is .

the time she takes to complete the book is .

18h = 135 & 7.5 hours

Step-by-step explanation:

Mary can read 18 pages in 1 hour so every hour, she will read 18 pages meaning that the number of hours is the variable. Therefore 18 times however many hours is equal to 135 pages.

7 sqrt(2) = c

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2+b^2 = c^2 where a and b are the legs and c is the hypotenuse

7^2 + 7^2 = x^2

49+49 = c^2

98 = c^2

Taking the square root of each side

sqrt(98) = sqrt(c^2)

sqrt(49*2) = c

7 sqrt(2) = c