When you talk about balanced equations you are talking about chemistry.
Chemical equation balance is to make sure that there are the same number of atoms of a given element in the right side than in the left side.
It is a chemical principle, the atoms do not create or destroy in a chemical reaction, then you have to count the same number of every kind of atoms in the left side than in the right side.
For example:H2 + O2 -> H2O is not balanced because there two atoms of oxygen in the left side and 1 atom of oxygen in the right side.
To balance this equation you have to insert coefficients:
2H2 + O2 -> 2H2O. Now you have 4 atoms of hydrogen in each side, and 2 atoms of oxygen in each side, making sure that none atoms was created or destroyed in the reaction.
Answer:
-1.5 + 4.2
Step-by-step explanation:
Since there is no negative sign,the sign would change.
So it will be -1.5+4.2
Answer:
b
Step-by-step explanation:
100 dollars month
100
plus
100+
0.15 per text
100+15t
Answer:
B
Step-by-step explanation:
Given
- 2.5(4x - 8) + 1.2(5x - 1)
Distribute both parenthesis
= - 10x + 20 + 6x - 1.2 → B
