Can someone help with this please?

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle

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