Question

Find the like terms in the expression y+1.2y+ 1.2z.

A. Y and 1.2y
B. 1.2y and 1.2z
C. Y and 1.2z
D. Y, 1.2y, and 1.2z
Simplify 2 + 17x – 5x + 9
A. 19x + 4
B. 12x + 11
C. 22x + 11
D. 15x – 4
Simplify 3(5y + 6) -4.
A. 11y + 14
B. 11y + 18
C. 15y + 14
D. 15y + 2
Factor 81 – 27p.
A 9(9 – 3p)
B. 27 (3 – p)
C. 27 (54 – p)
D. 27 (p – 3)

Answer 1

ABCB

Explanation:

Answer 2

`1.\\\underline{y}+\underline{1.2y}+\underline{1.2z}\to\boxed{y;\ 1.2y;\ 1.2z\to\boxed{D}}`


`2.\\2+17x-5x+9=(17x-5x)+(2+9)=\boxed{12x+11\to\boxed{B}}`


`3.\\3(5y+6)-4=(3)(5y)+(3)(6)-4=15x+18-4=\boxed{15y+14\to\boxed{C}}`


`4.\\81-27p=27\cdot3-27\cdot p=\boxed{27(3-p)\to\boxed{B}}\\but\\81-27p=9\cdot9-9\cdot3p=\boxed{9(9-3p)\to\boxed{A}}`