Your proof is correct and very well done
Answer:
B
Step-by-step explanation:
Basically, this question is asking the legs of the triangle shown in the graph.
In this right triangle, there are 2 legs and one of them is 6400 meters. We were asked to find out the length of the other led. And we know the angle is 16.5 deg.
Using Tangent to find out:
set the length of the other leg is x meters.
tan(16.5) = 6400/x
x= 6400/tan(16.5)
x= 21606 m
<h2><u>Answer:-</u></h2>
Amount of apple juice Will added 
<h3>• <u>Given</u><u>:</u><u>-</u></h3>
- Will puts 1/4 cup of grape juice in a cup.
- He added apple juice and then he had 1⅔ cup of juice in the cup.
<h3>• <u>T</u><u>o</u><u> </u><u>Find</u><u>:</u><u>-</u></h3>
- How much apple juice Will added to the cup?
<h3>• <u>S</u><u>o</u><u>l</u><u>u</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:</u><u>-</u></h3>
➪ Amount of grape juice Will added = 1/4
➪ Amount of juice in total after adding the apple juice = 1⅔
Therefore, it is clear that the amount of apple juice Will added to the cup will be the difference in total amount of juice and amount of grape juice.
Hence,
➪ 
➪ 
• <u>Takin</u><u>g</u><u> </u><u>an</u><u> </u><u>L.CM</u><u>:</u><u>-</u>
➪ 
➪ 
➪ 
Therefore, the amount of apple juice added is 
C. $693.33. Just round. It helps. Round 2,080 to 2,100. Then whats 30% of 2,100? It's easy just think of 21 divided by 3, which equals 7. So, 700 and the closest answers to that is $693.33. That's just the easy way instead of doing the math out. And it is also common sense that B or D wouldn't be it. So your left with C or A. :)