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

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

66% of the price that was mark on the bottom

if p is true and q is false, then p ∨ q is true