the answer is D.
In only polling people in Arizona, you aren't taking a representative sample of the total population. You want to represent all *U.S.* adults.
What if people from Arizona spend proportionally more (or less) than the rest of the nation?
The angle of elevation of the ground is the angle between the ground and the line of sight
The angle of elevation of the ground is 30.46 degrees
<h3>How to calculate the angle of elevation</h3>
The angle of elevation is calculated using the following tangent ratio
Evaluate the quotient
Take the arc tan of both sides
Using a calculator, we have:
= 30.46
Hence, the angle of elevation of the ground to the nearest tenth of a degree is 30.46 degrees
Read more about elevation and distance at:
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Answer:
I don't think this is correct tho some of them do I dont think most of them are
Using system of linear equations the distance at the fisherman and the bobbler meets ls 8 miles
Speed in still waters = 7 mph
Stream speed = 3 mph
Upstream speed of canoe = 7 - 3 = 4 mph
<em>Distance</em><em> </em><em>between</em><em> </em><em>fisherman</em><em> </em><em>and</em><em> </em><em>bobbler</em><em> </em><em>=</em><em> </em><em>14</em><em> </em><em>miles</em><em> </em>
Let seperation distance = d
Meeting distance = 14 - d
<u>using the relation</u> :
<em>Distance= (speed × time)</em>
canoe distance , <em>d = </em><em>4t</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>(</em><em>1</em><em>)</em>
Noobler distance = <em>14 - d = 3t </em><em>-</em><em>-</em><em>-</em><em>-</em><em>(</em><em>2</em><em>)</em>
Equate (1) and (2)
d/4 = (14 - d)/3
3d = 4 (14 - d)
3d = 56 - 4d
7d = 56
d = 8 miles
Hence, the distance is 8 miles
Learn more : brainly.com/question/25281514
