What is the approximate circumference of a circle with radius 3?

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

How can you check that you have correctly converted frequencies to relative frequencies?