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NARA [144]
3 years ago
11

What’s the answer to this question?

Mathematics
1 answer:
steposvetlana [31]3 years ago
5 0

Answer:

its x^4

Step-by-step explanation:

its x^4

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Which quadratic function has a vertex point of (3,5) and passes through the<br> point (-2,55)?
Alex17521 [72]

9514 1404 393

Answer:

  f(x) = 2(x -3)² +5

Step-by-step explanation:

For vertex (h, k) and scale factor 'a', the vertex form is ...

  f(x) = a(x -h)² +k

We can fill in the values of h and k from your vertex, and use the values of the extra point to find 'a'.

  55 = a(-2 -3)² +5

  50 = 25a . . . . . . . . subtract 5

  a = 2 . . . . . . . . . . . divide by 25

So, the function is ...

  f(x) = 2(x -3)² +5

__

In standard form, that will be ...

  f(x) = 2x² -12x +23

8 0
3 years ago
On a quiz there are four multiple-choice questions worth 3 points each and two true/false questions worth 1 point each. Each mul
Pani-rosa [81]

Answer: Expected value would be \dfrac{17}{5}

Step-by-step explanation:

Since we have given that

Number of multiple choice question = 4

Number of true false questions = 2

Number of points for each multiple choice question = 3

Number of points for each true false question = 1

Number of choices in multiple choice = 5

Probability of getting correct answer in multiple choice question = \dfrac{1}{5}

Probability of getting correct answer in true false question = \dfrac{1}{2}

Expected value of the student's score on the test would be

E(x)=\sum xp(x)\\\\E(x)=4\times 3\times \dfrac{1}{5}+2\times 1\times \dfrac{1}{2}\\\\E(x)=\dfrac{12}{5}+1\\\\E(x)=\dfrac{12+5}{5}=\dfrac{17}{5}

Hence, expected value would be \dfrac{17}{5}

3 0
4 years ago
Read 2 more answers
Determine the missing length. Show your work!
posledela

Answer:

15

Step-by-step explanation:

Pythagorean theorem: the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse.

C = the square root of A squared + B squared.

plug in the numbers

C = the square root of 9 squared + 12 squared = 15

8 0
3 years ago
Read 2 more answers
a real estate company sells 8 houses per month write an equation to find the total number of houses h sold in any number of mont
Verdich [7]
H=8x,so a real estates will sell 120 houses in 15 months. Hope it help!
3 0
3 years ago
jill lives 3 1/2 from school then a car broke down 2/3 the way there how much more does jill hve to walk
BlackZzzverrR [31]
  \frac{21}{6} -  \frac{4}{6} =  \frac{17}{6}

Or you can simplify it to 2\frac{5}{6}

7 0
3 years ago
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