PLEASE HELP WILL MARK BRAINLIEST!! The focus of a parabola is (−6,−3) . The directrix of the parabola is y=4. What is the equation of the parabola?

The focus of a parabola is (0,−4). The directrix of the parabola is the line y=−5. What is the equation of the parabola?

The directrix of a parabola is the line y=7. The focus of the parabola is (2,3). What is the equation of the parabola?

The directrix of a parabola is y=−6. The focus of the parabola is (−2,−4) . What is the equation of the parabola?

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?

How does the entropy of steam compare to the entropy of ice?