y = -1/2x + 5 should be your equation because it is 5 ft above sea level and its eroding, or going down, 1 ft per 20 years. So every year, the sand dune erodes 1/20 ft more.
Hope this helps!
Answer:
0, 5/4
Step-by-step explanation:
If
, you get 0=0, which is obviously true.
As long as K is not 0, you can divide by k and get
which is solved by 
Answer:
What is the wI-FI PASSWORD
Step-by-step explanation:
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(2x+1)-1=0
Divide
2=0
Reitalizie
<em>2=0</em>
Reatomize
⊕∴∵
Reunatomize
2=0
It is not true
2=0
Answer:

Step-by-step explanation:
If there are 3 milliliters of compound A used for every 4 milliliters of compound B, then we can denote that we use 3x milliliters of compound A and 4x milliliters of compound B to get 533 milliliters of the drug. Thus,

Hence, a chemist must take

of compound B.
I think it the third one (sorry if am wrong)