2/7 ÷ 3/4 - 2/7 = It has to be a fraction. Please answer quick! :(
Brainliest and 30 points.

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2

If the probability of an event happening is 65% then the probability this event does not occur?