Answer:
I believe it is 120. Since you need 30 more feet to reach 50 feet below sea level, you divide by 30/2 because every 8 seconds it drops 2 feet and multiply 15 by 8 .
Not sure, but hope it helps! :)
Answer:
dirk =13.25 hours
charlie =11 75 hours
Step-by-step explanation:
c+d=25------(1)
d-1.5=c-----(2)
from (1),
c+d=25
c=25-d-----(3)
substitude (3) into (2)
d-1.5=c
d-1.5=25-d
2d=26.5
d=13.25
if d=13.25 hours
c+d=25
c+13.25=25
c=25-13.25
c=11.75
Try (7x2)+d+c
I hope this helped?
If not maybe, 14+d+c?
Answer:
x<_-2 ( x is less than or equal to -2)
Step-by-step explanation:
First remove opposites and collect like terms so it will be -4x+12+4x<_-8x-8x-20.
Then move them to be 12<_-16x-20.
Move -16x to the left and the 12 to the right to combine it with -20 to become -32.
You are now left with 16x<_-32.
Divide both sides by 16 to get x<_-2.
Hope this helped :) btw <_ is less than or equal to i just dont know how to put the sign on top of the underscore :/
