To say that a coin is "fair" means that when it is tossed, each of the outcomes (heads or tails) has a 50% probability of occurring. This means:

a. in the next six flips of the coin, at least three of the outcomes will be heads.
b. in the next six flips of the coin, exactly three of the outcomes will be heads.
c. in the next 6000 flips of the coin, approximately 3000 of the outcomes will be heads.
d. in the next 6000 flips of the coin, exactly 3000 of the outcomes will be heads.

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)