Simplify 16/18+(-16)/27 answer immediately​

Which equation requires the division property of equality to be solved?

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?