Determine if each of the following sets is a subspace of {\mathbb P}_{n}, for an appropriate value of n. Type "yes" or "no" for each answer. A. Let W_{1} be the set of all polynomials of the form p(t)= at^{2}, where a is in {R}.B. Let W_{2} be the set of all polynomials of the form p(t)= t^{2} + a, where a is in {R}.C. Let W_{3} be the set of all polynomials of the form p(t)= at^{2} + at, where a is in {R}

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re