Let's set up a proportion.

Then solve for x:
12 x 800 = 9600
9600/100 = 96
96 is 12% of the 800 students. :)
Hope this helped! If you have anymore questions or don't understand, please comment or DM me. :)
Answer:
a
Step-by-step explanation:
5 times 8 =40
Answer:
9² = 40² + 41² - 2(40)(41) cos(C)
81 = 1600 + 1681 - 3280 cos(C)
81 = 3281 - 3280 cos(C)
-3200 = -3280 cos(C)
cos(C) = 3200 / 3280
cos(C) = 40 / 41
Step-by-step explanation:
On the 4th question I can’t tell if those are dots or arrows on the line above “AN” when it says “B lies on AN”, if those are 2 dots on the little line don’t check it, if they are 2 little arrows on the line then check the box, but other than that the rest of the checked are right!!