Find the total balance of each investment account earning simple annual interest. a: $624 at 5% for 3 years
b: $4,120 at 7% for 18 months
c: $900 at 3.1% for 6 months
d: $275 at 4.8% for 8 years

somebody deleted my answer but im back its the answer from the person above me and dont delete my thing again people need it :)

Step-by-step explanation:

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