Randy's parents gave him an allowance of d dollars each month. One month, he put half of his allowance in the bank and then bought a book for $8. He had $12 left in his pocket after buying the book. Write an equation to solve for the amount of Randy's monthly allowance. Then, solve it.​

What is the y-intercept of the line given by the equation

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?