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Blababa [14]
3 years ago
14

Which of the following are quadratic functions?

Mathematics
2 answers:
larisa [96]3 years ago
6 0
A and B are both quadratic functions
Alla [95]3 years ago
4 0

Answer:

The answer is a and b, like the other person said. hope we helped :))))

Step-by-step explanation:

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In the upcoming election for governor, the most recent poll, based on 900 respondents, predicts that the incumbent will be reele
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<h2>405 people</h2>

Step-by-step explanation:

It is given that there are a total of 900 people.

It is given that 55% of the people will reelect.

So,it can be found that 100-55=45% of the people may not reelect or may not make their decision yet.

So,number of people that may not reelect or may not make their decision yet is \frac{45}{100}\times 900=405.

So,405 people haven't made their decision yet or not reelect.

6 0
4 years ago
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5 0
4 years ago
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Which represents a quadratic function?
Zanzabum

Answer:

B

Step-by-step explanation:

a is a cubic. A cubic is an equation that has 3 on its base x to become x^3 as it's highest power. That is not a quadratic. A cubic and a quadratic are not the same thing.

b is a quadratic The highest power is 2 on the base (x)  to become x^2. That is how a quadratic is defined.

c is a reciprocal. It has its highest power in the denominator, and that is not a quadratic. A quadratic is an equation whose highest power is 2 on its base (x) and whose highest power is in the numerator, not the denominator. This choice is rather tricky because the quadratic formula can be used on it if you change x = 1/z. Then the equation becomes f(x) = 4z^2 - 2z + 1. But as it is given and likely as you have been told, this is not a quadratic. This will factor into  (2z - 1)(2z - 1). If I were a student, I'd question this one. It would be interesting to see how your instructor would eliminate it.

d is just a linear function. Since x^2 is multiplied by 0, it disappears. What is left is f(x) = -9x + 7 which is a linear function.

8 0
3 years ago
A rectangular filed is 190m by 270m . A rectangular barn is 23 m by 40 m is built in the field .
Anika [276]

Answer: 50,380m

Step-by-step explanation:

190m * 270m = 51,300m

23m * 40m = 920m

Because the barn is in the field, we subtract the barn's area from the field's area, which leaves us with

51,300m - 920m = 50,380m

4 0
3 years ago
PLEASE HELP MEOWT!!! <br> Rewrite sin^(4)xtan^(2)x in terms of the first power of cosine.
Stolb23 [73]

Step-by-step explanation:

{ \sin(x) }^{4}  { \tan(x) }^{2}

{ \sin(x) }^{4}  \frac{ { \sin(x) }^{2} }{ { \cos(x) }^{2} }

\frac{ ({ {1 -  \cos(x) }^{2} })^{3} }{ { \cos(x) }^{2} }

hopefully this helps, I'm rusty with my trig identities

6 0
3 years ago
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