Answer:
Step-by-step explanation:
we have that
The angle x is in quadrant IV
That means ---> The value of cos(x) is positive and the value of sin(x) is negative
Remember that
----> equation A
so
----> equation B
substitute equation B in equation A
solve for cos(x)
square root both sides
but remember that the value of cos(x) is positive (IV quadrant)
simplify
10 times larger than a thousand. Also one decimal place larger
R=-1/800(x^2-2400x)
use R'=0
R'=1/400x-300, 1/400x=300 => x=1200 critical point
take R(1200), we know its max bcuz of the orientation of R
Answer:
Step-by-step explanation:
We need to analize the information provided:
We know that this line passes through the point where "a" is the unknown x-coordinate of that point and 1 is the y-coordinate.
We know that the line also passes through the point (-1, -5) and the point (4, 5).
Then, in order to find the value of "a", we can plot the known points and draw the line (Observe the image attached).
You can observe in the image attached that the point whose y-coordinate is 1 is the point (2,1). Therefore, the value of "a" is: