What mistakes did he make? Select two options. He applied the reflection to the pre-image first.

He applied the rotation to the pre-image first.

He changed the size of the figure instead of just
applying a rotation.

He used point P as the center of rotation.

He used an incorrect angle of rotation around point P.

Reflect the point (7,0) across the y-axis

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0