Which of the following is the correct order of the polynomial
2y5+y+3y- 4y3 +
+12?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units