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Jlenok [28]
3 years ago
10

How do you know a function is a quadratic function?

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Answer:

Step-by-step explanation:

A function is quadratic if you can express it in the form :

f(x) = Ax² + Bx + C

and that A is non-zero.

The highest degree variable is 2 (i.e x² is the highest exponent)

Bogdan [553]3 years ago
6 0

Answer:

if the X variable is squared, then the function is quadratic

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Which ordered pair is a solution to the equation 2x - 4y = 18?
weqwewe [10]
(11,1) because if you plug in x and y this answer is the only one that gives you 18 in the end
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4 years ago
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In triangle ABC, AB = 11 cm, BC = 9 cm and CA = 10 cm.<br> Find the area of triangle ABC.
max2010maxim [7]

Answer:

Area = 42.43 square cm

Step-by-step explanation:

Using Heron's Formula :

 Area = \sqrt{s\times (s-a) \times (s-b) \times(s -c)} \ , \ where  \ s \ =\ \frac{a+ b+ c}{2}

<em><u>Find Area :</u></em>

<em><u></u></em>

s = \frac{11 + 9 + 10 }{2} = \frac{30}{2} = 15

Area = \sqrt{15 \times ( 15 - 11 ) \times { (15 - 9 ) \times ( 15 -10)}\\\\

      = \sqrt{15 \times 4 \times 6 \times 5}\\\\=\sqrt{1800}

      = 42 . 43 \ cm^2

7 0
3 years ago
What are the zeros of f(x)=(x+5)(x-9)?
klemol [59]

Answer:

x= -5

x= 9

Step-by-step explanation:

5 0
3 years ago
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Can someone please explain how to go the answers for this
Effectus [21]

Answer:

A=3, B=4, C=-5

Step-by-step explanation:

So A represents the amplitude, which is the distance between the midline (C), the middle of the graph, and the maximum (or minimum). B is the distance of the period of the graph. In this case, we see that the midline is C=-5 because that is the halfway point of the sine function. We also see that the period distance is B=5-1=4, so our period would be 2π/4 or π/2. Our amplitude would be A=3 because |a|=|-5-(-2)|=|-5+2|=|-3|=3. Observe the graph to see this visually.

7 0
3 years ago
NEED HELP QUICKLY!!
barxatty [35]
The answer is C 66 square inches
3 0
3 years ago
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