Ryan records four numbers from his science homework using scientific notation. 35x10^5 , 2.6x10^3 , 1.6x10^-6 , 7.9x10^2.
which number did Ryan record incorrectly?​

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%