How many ounces of a 11% alcohol solution must be mixed with 2 ounces of a 20% alcohol solution to make a 13% alcohol solution?
ounces.
the number of ounces of the 11% alcohol solution that needs to be mixed is
(simplify your answer.)

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′?