7.5
-11 + 26 is 15. 15 divided by 2 (finding the midpoint of the two numbers) is 7.5.
See attachment for the answer:
Answer:
x = + 7 or -7
Step-by-step explanation:
61 base 8 = 6*8+1 base 10 = 49
x^2=49
x = + 7 or - 7 base 10
x = + 7 or -7 base 8
Answer:
The width is 10. It shows it in the photo.