What does 12 times a number mean as an expression?

12x

Step-by-step explanation:

1) Since it doesnt provide you with a number to multiply by, you insert a letter like, x. If it provides you with a certain object, instead the first letter of that object

2) Because your question states 12 times, we put together the 12 and x together without the multiplication sign.

3)You are all set. That is an expression! <3

i would say b) is your answer

sorry if im wrong

step-by-step explanation:

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.