What is the value of x in the equation 3x-47=65, when y=4?
0
x=134
0
x=21
0
x=23
0
x=27

With this one. will mark brainliest

Asquare parking lot has 6,400 square meters what is the length in meters

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%