Please help 6. Keith spent half of his allowance going to the movies. He washed the family car and earned 9 dollars. What
is his weekly allowance if he ended with 18 dollars?

  $18

Step-by-step explanation:

Before he earned $9, he had $18 -9 = $9. That was half his allowance, so his allowance is 2×$9 = $18.

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

your answer is b ^w^ hope i