Answer:
x= 11
Step-by-step explanation:
or, 9x-18=81
or, 9x=81+18
or, 9x=99
or, x=99/9
or, x=11
Answer:
3 1/4
Step-by-step explanation:
because you divide 13 by 4 you get 3 1/4
You would write AB with a horizontal line segment over the letters A and B
So you would write this 
If you cannot draw that on your computer, then I would stick to saying "segment AB".
Answer:
The number is 76
Step-by-step explanation:
Answer:
150161 in base 8.
= 347^2 base 8.
Step-by-step explanation:
11100111^2
the last 4 digits of this binary number = 7 in base 10.
The number 11100000 in base 10 = 1*2^5 + 1*2^6 + 1*2^7
= 224 base 10
So 11100111 = 231 base 10.
231^2 = 53361.
Now convert this to base 8:
We divide by 8
8 | 53361
8 | 6670 remainder 1
8 | 833 rem 6
8 | 104 rem 1
8 | 13 rem 0
8 | 1 rem 5
| 0 rem 1
So the answer is 150161