There are 30 students in a class. the teacher will choose 2 students at random to represent the class at an assembly. how many groups of 2 students can be chosen?

Which statement about the annual percentage rate (apr) is not true?

Need asap. solve for the following inequality

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.