A. Always
These lines<span> are </span>perpendicular<span> since their slopes are negative reciprocals.</span>
I think the answer is both x and y are positive
To get the simple interest, we must use the formula: I= (p)(r )( t)
So, in this one we need to multiply $900x18x9.% and the answer will be $128.25. This is the amount of interest they are going to pay per year.
Answer:
The blank is 3
Step-by-step explanation:
1 - Give the blank a variable
x = our blank
2 - Write it out

3 - Get the denominators equal

4 - Simplify

5 - Solve for the numerators
30+7x = 51
-30 -30
7x = 21
x = 3