"Sum" tells us it's an addition problem:
One term is 12 and the other is 9/x
SO
The expression is:
12+9/x
Answer:
The answer is B.
Step-by-step explanation:
To obtain the inverse of a relation you simply interchange the x and y coordinates of each pair.
Here:
(3,1) becomes (1,3)
(3,1) becomes ((1,3)
(7, -7) becomes (-7,7) and
(12, -15) becomes (-15, 12)
<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>
Answer:
a)
, b)
, c)
, d) 
Step-by-step explanation:
a) The perimeter is the sum of the three sides of the internal square and the remaining sides of the external rectangle, that is:


b) The perimeter is the sum of the two sides of the internal triangle and the remaining sides of the external rectangle, that is:


c) The perimeter is the sum of the two sides of the circular section and the three sides of the lower rectangle, that is:


d) The perimeter is the sum of the external sides of the triangle and rectangle, that is:

