problem 6. Let the triangle abc have (J) be a tangent circle at angle A tangent to BC at D '. D on BC such that AD and AD 'are perpendicular in angle A. The circle through 2 points A and C is tangent (J) at Y. The circle through 2 points A and B is tangent (J) at Z. Prove that AD BZ CY is concurrent

Solve: 3x+y=6 4x-2y=18 show all work !

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

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%