How many terms are in the expression 5 - 3c + 21?
step by step explantion

5 - 3c + 21 --> 3 terms

Step-by-step explanation:

Step 1: A term is a number by it self or a number & variable. Ex: 5 + 6c. 5 would be one term, 6c would be the other.

Step 2: Now, let's look at 5 - 3c + 21.

Step 3: 5 is a term by it self. Since there is no variable, it's just 5.

            -3c is a term by itself. And, there is a variable, so it's -3c.

            +21 is a term by itself. Since there is no variable, it's just +21.

Note: You must carry the sign with it. For Ex: 5 - 3x + 21

         If you were given a question, "What is the third term of this equation?" you would write, "+21". You will always need to carry the sign with the number.

step-by-step explanation:

abc

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.