Kai flips a coin and spins a spinner with three equal parts labeled one, two and three. Predict the number of times Kai will get the outcome (heads, 2) in 300 trials.
(need help ASAP)

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%

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

The blue segment below is a diameter of o. what is the length of the radius of the circle?