PLEASE HELP. Find the value of x. If necessary, round to the nearest tenth. Picture down below.

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

The heliocentric and the geocentric models of the solar system included these central principles