The main difference between a bar magnet and an electromagnet is... Group of answer choices

Bar magnets are always magnetic, electromagnets can be turned on and off

Electromagnets are always magnetic, bar magnets can be turned on and off

Bar magnets are always stronger

Electromagnets are always stronger

Which of these is NOT a way plants are classified

Group of answer choices

Warm celled and cold celled

Vascular and nonvascular

Flowering and nonflowering

Cone producing and non cone producing

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so