Prove that if v and w are both subspaces of the vector space u, then their intersection is also a subspace of u. write a formal proof and write legibly! show all steps. linear algebra.

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

2.5 milligrams is equivalent to how many grams