Question

the mean of 6,y,7,x and 14 is 8 then
1: x+y=13
2:x-y=13
3: 2x + 3y=13
4:x2² + y² =15​

Answer 1

Answer:

1) 6+7=13

2) 24 -13=13

3) 2×2+3×3=13

4) 1×2×2+ (3)2 = 13