To find the value of X and Y it’s simple, if X + Y is equal to 30, you can take 144 and divide by 2, since 2 numbers are equal to 144 and you get 72, so you can change the value of X and Y to get something is 72 and that’s still 30 so that would be a Negative and a Positive we do, but subtracting 30 by 72 to get 42 which means one of our variables is 42, then we start again 30 minus 42 and we get minus 12 so our variables are 42 and minus 12 or in MX format (42+-12) which is equal to 30 I leave the rest to you
Source(s): I just know you won’t choose me
Like xy+144, x+y=30 and x>y, start by assuming they are equal and set each to 15, then separate them to find values with a difference of 4. This gives us 17 and 13, but 17*13 is greater than 144.
Do the same for answer option B, values with a difference of 6 give us 18 and 12, but 18*12 is still too big. Answer option C with a difference of 18 gives us values of 24 and 6. 24*6=144 and we find our answer.
xy=144
x+y=30
Substitute x=144/y and put in the second equation
–> 144/y + y=30 multiply by y and you will get
–> 144 + y^2 =30*y rearrange into a quadratic equation
–> y^2 – 30y + 144 solve the quadratic equation and get
–> y1=24 and y2= 6
As x>y it means x=24 , y=6
It means xy=24-6=18
xy=144
x + y = 30
(x+y)^2 – 2xy = 900-288=612 = x^2 + y^2
(xy)^2 = 612 – 288 = 324
As x > y:
x = 18
The value of x is 24 and y is 6. So x – y = 18.
answer 6
(x+y)/xy = one million/12 12(x+y) = xy 12x+12y = xy 12x = xy – 12y 12x = y(x-12) y = (12x)/(x-12) by capacity of this answer, if x = 12k, ok is a better integer or equivalent to two. The strategy checklist is therefore innumerable.