What is the eccentricity of the ellipse

((x+7)^(2))/(16)+((y-3)^(2))/(4)=1

Question b of 10which of the following describe an angle with a vertex at a? check all that applyo a. labcов. савd dooo c_baco d. zacb

What is the mean of the data set 125, 141, 213, 155, 281

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