I need help with these questions

(2nd question, asking about height)  

8cm or 0.08m

Step-by-step explanation:

1.43m - 143cm

(1m = 100cm)

143cm - 135cm = 8cm

445mm & 44.5cm

Step-by-step explanation:

155mm - 15.5cm

(1mm = 0.1cm)

15.5 + 16 + 13 = 44.5cm

44.5cm - 445mm

1) 18.3m-16.5m=2.8m

2) 1.43m-135cm=0.81m

3) 0.16m+1.55m+0.13m=0,84m or 84cm

4)-

5)-

Step-by-step explanation:

2)cause 135cm is 1.35m

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

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