10. Tell whether the sequence is arithmetic. If it is, what is the common difference? 2,7,13,20,...

no
yes: 2
yes; 6
yes; 5

not arithmetic

Step-by-step explanation:

An arithmetic sequence has a common difference between consecutive terms.

7 - 2 = 5

13 - 7 = 6

20 - 13 = 7

The difference between consecutive terms is not equal , then

The sequence is not arithmetic

because its not ur topic and its not for is for homework not that.

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