What is the value of this expression? 5/6 - (1/8•3/4)

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Simplify the algebraic expression 8y-2(y+4)