Lin scored 21 marks in a test and jon scored 15 marks. calculate lin's marks as a percentage of jon's mark.

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.