27+3x-31=20
-4+3x=20
+4 +4
3x=24
X=8
Answer:
You didn't add a photo
Step-by-step explanation:
......
Answer:
Final answer is
and
.
Step-by-step explanation:
Given equation is 
Now we need to find the solution of
in given interval
.




which gives
and
in the given interval.
Hence final answer is
and
.
Answer:
A. 29 feet
Step-by-step explanation:
Use cos to find the hypotenuse
cos = adj/hp
0.64 = 20/hyp
hyp = 20/0.64
hyp = 31.25
---------------------------
Use Pythagorean Theorem to find the height of tree above eyes
a² + b² = c²
a² + 20² = 31.25²
a² = 31.25² - 20²
a² = 576.5625
a = 24 (to the nearest foot)
-------------------------------
Finally add in the eye height
h = 24 + 5
h = 29 feet