Suppose t and u are linear transformations from set of real numbers r superscript n to set of real numbers r superscript n such that t(ux)equalsx for all x in set of real numbers r superscript n. is it true that u(tx)equalsx for all x in set of real numbers r superscript n? why or why not?

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Describe cytokinesis in plants and animals. in animals: in plants.

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.