Draw a right triangle to represent the problem.
The vertical height of the triangle is 9 ft, and it represents the tree.
The horizontal length, at the bottom of the tree is ground level and has a length of 13 ft.
Let x = angle of elevation.
By definition,
tan x = 9/13 = 0.6923
x = arctan(0.6923) = 34.7 deg. = 35 deg (approx)
Answer: 35°
<span>70 thousand is written in short word form, because its written as a combination of numbers and letters.
Standard form would be to write the number easily using multiplication with 10. That woul be:
70000=7*10^4. It;s 10^4 because the decimal point has been 4 laces to the left to get the number to be 7.
Word form can be obtain by writing the number using letters. Long word form is: seventy thousand. But because sevety is written with number (70), this is short word form of the number,</span>
The required equation is: 
Option C is correct.
Step-by-step explanation:
The proportional relationship can be found using the equation: 
where x and y are the points and k is the constant of proportionality.
We need to find k.
From the graph given, we can locate points x and y:
x=5, y= 35 then k would be:

x=10, y=70 then k would be:

For each values of x and y, the constant of proportionality k is 7
So, the required equation is: 
Option C is correct.
Keywords: Proportional Relationship
Learn more about Proportional Relationship at:
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<h2><u>Given</u> :-</h2>
x^2 - x - 6
<h2><u>Solution</u> :-</h2>
Factorisation :-
x^2 - x - 6
= (x - 3)(x + 2)

Answered by - ItzMaster