What is the additve inverse of 9/10

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Ineed with the quizzes in apex mathematics ii

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when equals y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15