Which expression is equivalent to 2(a+3) when a= 3?
A 2(3)
B 5(3)
C 2(3)+3
D 2(3)+6

D

Step-by-step explanation:

2(a+3), a=3

2(3+3)

2(6)

12

A) 2(3)=5             (not equivalent)

B) 5(3)=15              (not equivalent)

C) 2(3)+3=9         (not equivalent)

D) 2(3)+6=12       (equivalent)

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

50*10 is greater

step-by-step explanation:

if you add the zero from 10 to 50, it will give you a bigger number.