Answer: 
Step-by-step explanation:
You need to draw a right triangle as the one attached, where 
is the angle of elevation from the fire to the top of the fire tower.
You need to use the Inverse trigonometric function Arctangent:
Observe the triangle. You can identify that:
Then, you can substitute values:
Finally, evaluating, you get that the angle of elevation from the fire to the top of the fire tower is the following:
Rounded to the the nearest tenth of a degree:
a. 20 because y is the amount of $$ in account now
b. 12 a $$
c. 260, bc 12*20= 240 240+20=260
(21 3/4) / (2 1/2) =
(87/4) / (5/2) =
87/4 * 2/5 =
174/20 reduces to 8 7/10 (or 8.7)meters per hr
Answer:
The last one
Step-by-step explanation:
The triangle is simply reflected across the x-axis, so the side lengths and angle measures do not change.
Answer:
C. 53°
Step-by-step explanation:
<l + 96° = 149° <exterior angle of a triangle is equal to the sum of two opposite interior angles>
< l = 149° - 96°
<l = 53°
Hope it will help :)❤
