Hello everyone! i need asap whenever someone can it'll be really
question: there are 40 students in your class on one test, 95% of the students received passing grades. how many students failed the test?
it'll be if someone can me and explain it the best way they could.. don't come for the points and ..

2 students failed the test.

Step-by-step explanation:

There are 40 students and 95% passed. 95% is also equal to 0.95. Since we are looking for the students who failed, subtract 1.00 - 0.95. You get 0.05. The percentage of students who failed is 5%. Multiply 0.05 times 40 to get 2. This is the amount of students who failed.

A) sin 120=sin (180-60)=sin 60= (It lies on second quadrant where sin is +ve)
B)  tan (150)=tan(180-30)=-tan30=(It lies on second quadrant where tan is -ve)
C) cos (-135)=cos (135)=cos (180-45)=-cos (45)=(It lies on second quadrant where cos is -ve)
D) sec (300)=sec (360-60)=sec(60)=2 (It lies on fourth quadrant where sec is +ve)
E) sin (240)=sin(180-(-60))=sin(-60)=-sin (60)=
(It lies on third quadrant where sin is -ve)
 F) cos (330)=cos(360-30)=cos(30)=
(It lies on fourth quadrant where cos is +ve)
sin (240)- cos (330)=