Answer:

Step-by-step explanation:
The quadratic formula is
, where a, b, and c are values in the quadratic ax^2 + bx + c. Plug in the values to get 
Sin D is 21/29
cos D is 20/29
tan D is 21/20
sin E 20/29
cos E is 21/29
tan E is 20/21
sin is y/r
cos is x/r
tan is y/x
Two different perspectives of the triangle, D and E.
Answer:
The line of sight distance is 1285.58 feet.
Step-by-step explanation:
The situation is illustrated in the figure attached.
From the figure we see that the altitude difference of the planes and the distance between them form a right triangle with one angle of 40° .
The line of sight between the two planes is the hypotenuse of the triangle.
The altitude difference of the planes is

Therefore, if we call
the line of sight distance, from trigonometry we have


Therefore, the line of sight distance (x) is 1285.58 feet.
● Answer:
~~ 15 weeks
● Step-by-step explanation:
1 week = 7 days = 7×24hours = 168 hours
2500 hours ÷ 168 hours = 14.88 hours
~~ 15 weeks
-10/5 or -8/4
You can make up an equation with the solution of -2 by multiplying -2 by any number ( for example -2 x 5 ) and then divide the result by the random factor you chose ( which would be 5 in this case )