ANSWER

and they are actual solutions.
EXPLANATION
The given equation is:

Cross multiply

This implies;


Factor





The domain of the given equation is

Therefore the actual solutions are

NB: x=3 is not in the domain of the given equation. It cannot be an extraneous solution.
Since there is no distance between the pole and the base of the tower, we can assume that the pole is at the base of the tower.
We can create a right triangles between the pole and its shadow and between the tower and its shadow as shown in the figure. Let

be the height of the tower. Since our triangles are similar the ratio between its sides is going to be proportional, so we can establish a proportion to find

:


We can conclude that the tower is 137.27 meters tall.
Answer:
If I am not wrong Arnold's dog weights 20 and his brother 30 because if the total is 50 add 10 then divide by 3 and you get 30 ( dog of brother)
50 - 30 = 20
Step-by-step explanation:
110 liters. 1000ml = 1 liter. Move the decimal 3 places to the left,so 110,000 ml becomes 110 liters.
Solve 89 = .7x and you will get 127.14