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Vikentia [17]
3 years ago
8

Which of the following is a secant?

Mathematics
1 answer:
taurus [48]3 years ago
4 0

A secant is simply a line that intersects the circle at exactly two points.

Therefore, line GH is a secant of circle

B since it intersects the circle ast 2 points.

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the function of y= x^2 - 4x + 8 approximates the height y, of a bird and its horizontal distance, x as it flies from one fence p
Vika [28.1K]
Rewrite the given equation as 
y=x^2-4x+8=x^2-4x+4+4=(x-2)^2+4.
Since (x-2)^2\ge 0, you can conclude that the imimum value of y will be gained for the minimum value of (x-2)^2. The minimum value of (x-2)^2 is 0 for x=2. 
So, y(2)=0+4=4.
Answer: minimum value of y is 4, when x=2.


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2 years ago
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Nutka1998 [239]

Check the picture below.

\textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-16}x^2\stackrel{\stackrel{b}{\downarrow }}{+160}x\stackrel{\stackrel{c}{\downarrow }}{+20} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right)

\left(-\cfrac{ 160}{2(-16)}~~~~ ,~~~~ 20-\cfrac{ (160)^2}{4(-16)}\right) \implies \left( - \cfrac{ 160 }{ -32 }~~,~~20 - \cfrac{ 25600 }{ -64 } \right) \\\\\\ \left( 5 ~~~~ ,~~~~ 20 +400 \right)\implies (\stackrel{seconds}{5}~~,~~\stackrel{feet}{420})

6 0
1 year ago
There are 24 adults and 30 children at a science museum. What is the ratio of children to total people at the science museum?
11111nata11111 [884]

Answer:

5 / 9

Step-by-step explanation:

Total people = 24 + 30 = 54

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30 / 54 = 5 / 9

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The slope of a liner model represents the starting value.
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