Which of the following statements is the most precise and correct to define an angle?
A. The space between two intersecting lines.
B. The exact degree of a rotation of a geometric figure in a coordinate plane.
C. A figure formed by two rays, called the sides of the angle that share a
common endpoint, called the vertex of the angle.

7x+8y=-18, 4x-9y=-3 solve the system of equations

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

In the diagram of circle o, what is the measure of zabc?