1. What is the third angle a triangle if the two angles are 47° and 88°?

A. 45° B. 50° C. 65° D. 55°

2.In the expression –3x^y?, which is the numerical coefficient?

A. 3 B. -3 C. 4 D. 2

3. Which terms are similar?

A. 3x , 3x²

B. 4x , 4*

C. y³ , 3y

D.-2 , 10y

3.Which of the following is similar to the term -5x³y² ?

A. -5x²y³

B. 10x³y²

C. -5x³ -y²

D. 10x³ -y²

4. Which one is the literal coefficient of the expression -7ab²c?

A. -7 ...B. ab² C. ab²c D. -ab²c ​​