X²+3x-21=0
1) we solve this square equation:
x=[-3⁺₋√(9+84)] / 2=(-3⁺₋√93)/2
We have two solutions:
x₁=(-3-√93)/2
x₂=(-3+√93)/2
2) we compute the product of the 2 solutions found.
[(-3-√93)/2][(-3+√93)/2] =(-3-√93)(-3+√93) / 4=
=(9-93)/4=-84/4=-21
Answer: the product of the 2 solutions of this equation is -21 
        
             
        
        
        
<span>(y-7) = 3/5 (x+25)^2 so the y intercept is -7 and the vertex is 35
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Answer:
x=7; NL=12; NP+20
Step-by-step explanation:
 
        
             
        
        
        
From the information provided by the statement, you know that
 *Ann draws 2/16 of the playground
 *Susan draws 6/16 of the playground because she draws 3 times as much as Ann so

 *Louise draws 3/16 because she draws half as much as Susan, so

 *Sam draws 2/16 because she draws 1 less section than Louise

Now, let x be the fraction of the playground that still needs to be drawn. Then, you have

Therefore, 3/16 of the playground still needs to be drawn.
 
        
             
        
        
        
Answer: It is the ratio of the stress of the circle to the area of the square from a cross section.
Step-by-step explanation: