Does anyone notice or know why is dead for many days??​

When are two distinct non vertical lines parallel

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2

What is r i 4.5+10r=-6.5 with work pls