7. Solve -7g + 3 + 10g = 1 + 3g + 12. Tell whether the equation has infinitely many solutions or no solutions

How do you find principle and simple interest

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%

Plz ( true - false) all triangles have interior angles whose measure sum to 90.