Two more than 16 times a number is the same as 21 less than the product of -7 and the number.

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

How to simply and write the answer n a whole number