Quadrant 4
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Answer: 43.5
Step-by-step explanation:

Answer:
13x10^15
Step-by-step explanation:
8+5 = 13
6+9 = 15
Answer:
The numbers are 39 and 14.
Step-by-step explanation:
Equation 1, sum of the numbers:
x + y = 53
Equation 2, difference of the numbers:
x - y = 25
System of equations:
x + y = 53
x - y = 25
----------------
2x = 78
x = 39
Solve for y:
39 + y = 53
y = 14
The numbers are 39 and 14.