~Hello there!
Your question: Scientifically is light the fastest thing in the world?
Your answer: Yes! Light is the fastest thing in the world!. Its even proved in the modern physics. Even if the light going through an empty space, its velocity will be constant and steady.
Any queries?
Happy Studying ^=^
Fault block mountains folded mountains
Answer:
(1) The two column proof is presented here as follows;
Statement 
Reasons
1. C is the midpoint of 
Given
B is the midpoint of 
D is the midpoint of 
2. AC = CE, AB = BC, CD = DE Definition of midpoint
3. AB + BC = AC, CD + DE = CE Segment addition postulate
4. CD + DE = AC Substitution property of equality
5. AB + BC = CD + DE Substitution property of equality
6. BC + BC = CD + CD Substitution property of equality
7. 2·BC = 2·CD Addition of two identical quantities
8. BC = CD Division property of equality
9. BC ≅ CD Definition of Congruence
(2) The two column proof for the triangular geometric figure is presented here as follows;
Statement Reasons
1. 2·WV = XY; 2·YZ = XW; WV = YZ Given
2. 2·WV = 2·YZ Multiplication property
3. XY = XW Substitution Property
4. XW + WV = XV Segment Addition Property
XY + YZ = XZ
5. XW + WV = XV Substitution Property
XW + WV = XZ
6. XV = XZ Substitution Property
Explanation:
Answer:
Alkali metals are highly reactive elements that appear to be silver and they are found in group 1 of the periodic table. It consists of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). As you go further down the group, the more reactive they are. Those elements all react to water and air, so they must be kept in oil to preserve their state.
Probably the answer will be 28.60 because it's a lower number
