There are 16 smaller triangles within the main large one. .25=1/4, so your fraction is 1/4. 1/4 of 16 is 4, because 4+4+4+4=16. So colour in 4 triangles. Hope this helps!
You're dividing where you need to multiply. The intersecting chord theorem says
5(12)=7.5 x
x = 5(12)/7.5 = 8
Choice F
It does not matter in which order I multiply. I will simply multiply negatives, then positives.
-(4)2(3)3(-6)2(-2)4
-48(2)(3)(3)(2)(4)
-48(18)(2)(4)
-48(18)(8)
-48(144)
-6,912
