I need questions 6 and 7! someone please help me

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

What is the distance between point a and b