Select a counter-example that makes the conclusion false.. you select three marbles from a bag and each of them is black.. conclusion: all the marbles in the bag are black.. counterexample: i need some !

Statement and Conclusion

  You select three marbles from a bag and each of them is black. All the marbles in the bag are black.

Counter-example:

Let there are 9 marbles in the bag, in which three are red marbles , three are black, and three are white marbles.

Now, you have drawn three marbles from the bag and these marbles are combination of Red and white, that is none of them is Black.

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this