Answer:
![\: \sqrt{81 } = 9](https://tex.z-dn.net/?f=%20%5C%3A%20%20%5Csqrt%7B81%20%7D%20%20%3D%209)
Step-by-step explanation:
![\sqrt{81 } = \sqrt{3 \times 3 \times 3 \times 3} \\ = 3 \times 3 \\ =9](https://tex.z-dn.net/?f=%20%5Csqrt%7B81%20%7D%20%20%3D%20%20%20%5Csqrt%7B3%20%5Ctimes%203%20%5Ctimes%203%20%5Ctimes%203%7D%20%20%20%5C%5C%20%20%3D%203%20%5Ctimes%203%20%5C%5C%20%20%3D9)
You have to prime factorise 81 and then you will get <u>9</u> as the answer.
Answer:
19/3 or 6.33 continuing
Step-by-step explanation:
using pemdas, do the exponent first
6-2=4
then multiply by 4
4x4 is 16
add 3^2 to this, which = 9
so 16+9-6 is on top which equals 19, this is over 3
so 19/3
Answer:
Option 4
Step-by-step explanation:
You divide 1/2 by the whole problem
5x-15=20
and go from there its too long to explain but its option 4
I am pretty confident its 1.0
Answer:
6x ≥ -24
x ≥ -4
Step-by-step explanation:
the inequality of Six times a number x is at least −24
6x ≥ -24
Divide each side by 6
6x/6 ≥ -24/6
x ≥ -4