The figure shown is a rhombus.

A rhombus with diagonals is shown. The diagonals form 4 triangles. The measures of the angles are x degrees, y degrees, and z degrees. All sides are congruent.

Which equation is true regarding the angles formed by the diagonals and sides of the rhombus?

x + y = z
2x = y + z
z + x = 2y
2x + 2y = 4z

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%