Let hh be the set of all points in the second quadrant in the plane v=ℝ2v=r2. that is, h={(x, y)∣x≤0,y≥0}h={(x, y)∣x≤0,y≥0}. is hh a subspace of the vector space vv?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Evaluate cos2θ for cosθ = square root of 3/2