write the following statement in if - then form.

david will sing provided eric plays the piano.

The if-then statement is the following conditional statement "if X , then Y ," It is used to present situations and their possible outcomes. X is the cause and Y is the conclusion.

In our case the conditional "if-then" statement would be:

If Eric plays the piano then David will sing.

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;