Answer:
15
Step-by-step explanation:
a^2 + b^2 = c^2
20^2 +b^2 = 25^2
400 + b^2 = 625
-400 -400
b^2 = 225
b = √225
b = 15



<u>By first equation,</u>


<u>Now, we can find the original value of y.</u>








<u>Now, we can find the original value of x.</u>




Therefore, the values of x and y are 5 and 2 respectively.
Answer:
15.5
Step-by-step explanation:
-2 7/12 = -31/12
-31/12 ÷ -1/6 = 15 1/2 or 15.5