Rewrite as a complex number in standard form, a+bi

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a

The length of the line segment ac is 8x-9 what is the value of x