How many terms are in this expression? 2 + 12a − 7b + 9a + 14 a) 2 b) 3 c) 5 d) 6

C) 5

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

2 + 12a − 7b + 9a + 14

In an expression each term is separated by a + sign or a - sign. A term can be a number, a variable, or a term multiplied by a variable or variables.

In this case there are five terms: 2; 12a; 7b; 9a and 14.

So, the correct option is c) 5.

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Step-by-step explanation:

For example : If ∠MON and ∠NOK are joined such that NO is the common line segment between then then the new angle will be ∠MOK or ∠KOM.

In given figure , m∠BEC and m∠CED are joined and they have common line segment CE , then the new angle m∠BED= m∠BEC + m∠CED

Hence, the correct statement that completes the given proof :

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate