Which best defines an algebraic expression?

a.
a number or a combination of numbers, variables, and symbols that represents a given value

b.
a letter or symbol that represents one or more numbers

c.
a mathematical statement showing that one quantity is not equal to another

d.
a number sentence that uses an equal sign to show that two amounts have the same value

Hi!

We can eliminated D since it's an expression, which is one sided.

C. can go down the drain. It's an expression, not an inequality.

B. is a variable, since its values varies.

A. is correct.

Hope this helps,
-Tiara and *Starry*

Yes a is correct answer to this question

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm