An artist made purple paint by mixing 1/2 quart of red paint and 3/4 quart of blue paint. what is the ration of red paint to blue paint in simplest form

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