Answer:
The third answer that is C is correct
Answer:
3/4
Step-by-step explanation:
3/4 as a decimal is .75
.75>.73
Answer:

Step-by-step explanation:
We can add 9 to both sides of the equation to get
.
We can divide both sides of the equation by 21 to get
.
We take the square root of both sides of the equation to get
.
However, that isn't in the form we need.
We know that 
so the answer is really
and we're done!
Answer:
what am I simplifying exactly
Answer:
A 3
Step-by-step explanation:
Let n = the number
a number decreased by 12
n-12
This is equal to 3 times the opposite =
3 times the opposite
3*(-n)
-3n
Setting the two parts equal
n-12 = -3n
Subtract n from each side
n-n-12 = -3n-n
-12 = -4n
Divide by -4
-12/-4 = -4n/-4
3 =n