Which of these is a common characteristic of cnidarians? a. they have four legs. b. they have tentacles with stinging cells. c. they live only in the oceans. d. they live only at the surface of the water

Hello there,

Which of these is a common characteristic of cnidarians?

All Cnidarians have tentacles with stinging cells in their tips which are used to capture and subdue prey.

Therefore, your answer would be
They have tentacles with stinging cells. (OptionB)

D

Step-by-step explanation:

10*20=200

200 + 1020= 1220

Works for the first one

20*20=400

400+ 1020=1420

Works for the second one

30*20=600

600+1020=1620

Works for the third one, and all the others one so forth.

You take the number on the left (10, 20, 30, 40, 50, 60, 70) and times it by 20, replacing the x in the equation with the number on the left side of the table. Then you add the number from said equation to result of the multiplication from the first step.