Acoin with a 0.71 probability for a head is flipped 4 times. find the probability of obtaining exactly 2 heads

Me asap! what is the slope of this line? enter your answer in the box.

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?