Answer:
The angle of elevation is approximately 
Step-by-step explanation:
Notice that the two pieces of information given: "400 ft away from a building", and building that is "850 ft tall", can be regarded as the two legs of a right angle triangle (see attached image).
Then the angle
that we are trying to find (the angle of elevation) can be found by using the arc-tangent function:

Answer:
x = -7/4
Step-by-step explanation:
"Eight times a number equals 4 times that number less 7."
Subtracting 4x from both sides of this equation, we get:
4x = -7
Dividing both sides of this result by 4 yields
x = -7/4
The range of any data set is always the biggest number - the smallest number. In this case the equation is 34-8=26. So the range would be 26.
Hope this helps
12.900 because it is only one digit away from the next hundred
Answer:

Step-by-step explanation:
Let
b -----> the base of parallelogram
h ----> the height of parallelogram
we know that
The area of parallelogram is equal to


so

substitute the value of b
---->inequality that represents all possible values of h