What is 1-cos(6x)=___

What is r i 4.5+10r=-6.5 with work pls

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625