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.

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

did you get the answer yet?

step-by-step explanation: