Student 1 and 3.

Move the negative into the brackets,
positive becomes negative while two negatives make a positive.
20/49.99
≈ 40%
Because you're taking 20 out of 49.99.
Answer:
C
Step-by-step explanation:
The volume (V) of a cone is calculated as
V =
area of base × height
=
× πr² × height
Here diameter = 22, thus r = 11 and h = 22
V =
× π × 11² × 22
=
× π × 121 × 22
= 
≈ 2787.64 → C
Answer:
0.08
1/4
0.3
1.3
40%
85%
Step-by-step explanation:
Try converting all of these numbers to decimal. 40% would be 0.4, 1/4 would be 0.25, 1/3 would be 0.3 repeating, and 85% would be 0.85. From there, reordering the numbers is pretty easy.