Answer:
Find the value of x:-
To find Y, use Pythagorean theorem:- 




subtract 1.96 from both sides


Now, to find x:-



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Complete Question
The complete question is shown on the first uploaded image
Answer:
1

2

3

4

Step-by-step explanation:
Generally the area of a sector is mathematically represented as

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and 


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in and 


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and 


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and 


Answer:
8) -8, -9
9) 4, 
Step-by-step explanation:
8) x² + 12x + 27
Solutions of a polynomial means the values of
such that the polynomial becomes zero.
.
We use the following formula to determine the solutions of a quadratic equation of the form: 

In this equation, 
Substituting in the formula, we have:


Taking 2 common outside we get:

Therefore, we get two solutions viz, x = -3, -9.
9) 2x² - 9x + 4 = y
X- intercepts of a polynomial means the value of x such that y = 0. It means the roots of the polynomial.
Solving the equation using the formula above, we get:


The values of x = 4,
.
Hence, the answer.