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Butoxors [25]
2 years ago
7

You want to predict which candidate will likely be voted Seventh Grade Class President. There are 560 students in the seventh-gr

ade class. You randomly sample 3 different groups of 50 seventh-grade students. The results are shown.
Candidate Preference
Candidate A Candidate B
Sample 1 -27 23
Sample 2 -22 28
Sample 3 -15 35

Use each sample to make an estimate for the number of students in seventh grade that vote for Candidate A. Round your answer to the nearest whole number.

Sample 1: about ____ students

Sample 2: about ___ students

Sample 3: about ___ students

b. Who do you expect to be voted Seventh Grade Class President?
A. Candidate A
B. Candidate B

Explain.
Mathematics
1 answer:
Inga [223]2 years ago
7 0

Answer:

candidate b because it's mostly likely to have more people i think

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The parabola opens upward has x = 2 as an axis of symmetry and contains the non -vertex points (1, 9) and (4, 27) write the equa
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Answer:

<h3>               f(x) = 6(x - 2)² + 3</h3>

Step-by-step explanation:

f(x) = a(x - h)² + k    - vertex form of the equation of the parabola with vertex (h, k)

"the parabola opens upward" means:  a>0

"the parabola has x = 2 as an axis of symmetry" means:  h = 2

so f(x) = a(x - 2)² + k

"the parabola contains the point (1, 9)" means:

9 = a(1 - 2)² + k

9 = a(-1)² + k

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"the parabola contains the point (4, 27)" means:

27 = a(4 - 2)² + k

so:

27 = a(2)² + 9 - a

27 = 4a + 9 - a

3a = 18

a = 6

and  k = 9 - 6 = 3

Therefore the vertex form for this parabola is:

                                     <u> f(x) = 6(x - 2)² + 3</u>

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Read 2 more answers
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