Is it possible to form a triangle with the given side lengths? If not explain why not. 0.7, 1.4, 2.1

a. yes

b. no; 0.7 + 2.1 > 1.4

c. no; 2.1 + 1.4 > 0.7

d. no; 0.7 + 1.4 = 2.1​

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.