Marcus is 20 years older than his youngest sister cindy of some of their years is 66 how old is cindy marcus is 20 years older than his youngest sister cindy the sum of their years is 66 how old is sandy

23

Step-by-step explanation:

If cindy is 23 and marcus is 20 years older, 23+20= 43. Cindy is 23 and Marcus is 43, their ages added together is 66.

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