Answer:
0.40 feet
Step-by-step explanation:
For the first scenario, a 50-foot building casts a shadow of 1 foot. Let the angle of elevation of the sun from the shadow be denoted as θ.
Then:
Tan θ = 
Tan θ = 
Tan θ = 50
⇒ θ =
50
= 88.8542
= 
The elevation angle is roughly
.
For a 20-foot pole,
Tan θ = 
Tan
= 
x = 
= 0.4015
= 0.40 feet
The length of the pole's shadow is 0.40 feet.
Rounding 17.2 to one significant figure gives you 17. This is because when the digit after the decimal point is below 5, you simply keep the number as is, but if it's 5 or above, you round up.
Response:
3.0
Detailed breakdown:
1(0.1) + 2(0.2) + 3(0.3) + 4(0.4) equals 3.0
Answer:
and these represent genuine solutions.
Step-by-step explanation:
We have

Factor both sides' denominators.

Simplify.



Verify
1) For 


---> is valid.
Thus,
-----> is a legitimate solution.
2) For 


---> is valid.
Therefore,
-----> is a legitimate solution.
Thus,