Answer:
the last one is the answer of it
B because x is the independent variable; you could choose any number for x
Answer:
79 minutes
Step-by-step explanation:
A plane is travelling at 180 meters per seconds
Convert to km/hr
180× 18/5
= 648 km/hr
Since 648 km equals 1 hour then the number of minutes required for the plane to travel 800 km is
= 1/648 × 800
= 1 hour 19 minutes
Conver the time to full minutes
60 minutes = 1 hour
= 60+19
= 79 minutes
Hence the minutes required for the plane to travel 800km is 79 minutes
Answer: 
This is the square root of 26 over 26. The second 26 is not inside the square root. You can type it in as sqrt(26)/26.
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is in Q1 so 
Use the trig identity below and plug in the given value to get...


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Edit:
To find cos(theta), we use the pythagorean identity below

N^2 should be the correct answer. Based on those numbers, it appears that the sum can be found by squaring the term n