9 is 18% of 50. So, 50 percent also written as 50% means 50 out of 100 parts. Since there are exactly two 50s in 100, fifty percent is the same number as one half. 50 percent=0.5 in but as a fraction, its 1/2.
The value of xy is 114 which is a real number.
real numbers are all numbers/points that exist at the variety line.real numbers may be divided into the following divisions:Rational numbers; any range which may be written within the form ofin which p and q are co-prime integer numbers , are called rational numbers. Irrational numbers ; all numbers which cannot be written as a simple fraction is referred to as irrational numbers.
Given two real numbers x and y . Let us consider
.
According to the question their sum is 25.
.............(i)
The difference of the numbers is 13.
...........(ii)
Now we have to solve the simultaneous equation:
adding equations (i) and (ii) we get:

Substituting the value x=19 into equation (i) we get:

Now let us find the product xy

The product xy is 114 which is also a real number.
To learn more about Real numbers:
brainly.com/question/2515651
#SPJ4
Look it up or study they are not that hard
About 600
182 + 412
1 + 4
8 + 1
2 + 2
182 + 412 = About 600
2(x-2)+(x+3)
=(2x-4)+(x+3)
=2x-4+x+3
=3x-1