Answer:
Step-by-step explanation:
Given the equation 
Step 1;
Expand the bracket at the right hand side of the equation to have:

Taking the reciprocal of both sides:

Answer:
D
Step-by-step explanation:
When iron reacts with air and water, it forms Iron (III) oxide, also known as rust, which is reddish-brown.
Answer:
A line that falls from right to left has negative slope.
Step-by-step explanation:
Due to the fact that negative slope looks like this
Answer:
12.5 on left side and right side is 20.5 and 17.5
Step-by-step explanation:
Just put them on the other side that the number is on.
Answer:
175140 is the LCM of 2 085 and 252