Answer:
9
Step-by-step explanation:
Let the no be x
By the conditions given ,
2x + 6x = 72
8x = 72
x = 72/8
x = 9
therefore the no is 9
We have to put values of domain to find range

![\\ \ast\sf\longmapsto D_R=[-1,0,1]](https://tex.z-dn.net/?f=%5C%5C%20%5Cast%5Csf%5Clongmapsto%20D_R%3D%5B-1%2C0%2C1%5D)



Now
![\\ \ast\sf\longmapsto R_R=[-2,1,13]](https://tex.z-dn.net/?f=%5C%5C%20%5Cast%5Csf%5Clongmapsto%20R_R%3D%5B-2%2C1%2C13%5D)
Answer:
D. -2 - (square root of 3) is a known root
Step-by-step explanation:
It’s D on edge
Answer:
8 hours 456 miles
1 hour 456/8 miles
456/8=57
I used a calculator here so you can check
so,
1 hour is 57 miles
12 hours will take (57)(12)=684 miles
The answer is 684 miles
Hope the explanation and the answer helped you