12. John wants to go to the movie this weekend. He needs to know about how much money he will need. He checks the prices of movie tickets and finds the following ticket prices at 5 different theaters. $6.50, $8.00, $10.50, $9.00, $8.00 What is the mean price of a movie ticket? A. $8.40 B. $8.00 C. $4.00 D. $7.50​

hi! i think the answer is 1/2 : )

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

the 3rd on is correct

step-by-step explanation:

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal