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Anuta_ua [19.1K]
3 years ago
13

For the given equation, find the values of a, b, and c, determine the direction in which the parabola opens, and determine the y

-intercept. Decide which table best illustrates these values for the equation:
y = 3 x squared + 2 x minus 8

Mathematics
1 answer:
mariarad [96]3 years ago
7 0

Answer:

Table A

Step-by-step explanation:

y  = 3x^2 +2x -8

The quadratic is in the form

y = a x^2 +bx+c

a = 3  b = 2 c = -8

Since a > 0 it opens up

The y intercept is c so the y intercept is -8

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rosijanka [135]
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How many times do 8 go into 5
babunello [35]

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8 0
2 years ago
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gtnhenbr [62]

9514 1404 393

Answer:

  • ornament area = 379.8 cm²
  • paint needed: 114 bottles

Step-by-step explanation:

The surface area of one cone with slant height s and radius r is ...

  SA = πr² +πrs = πr(r+s)

For the cone that is half an ornament, the surface area is ...

  SA = (3.14)(4.2 cm)(4.2 cm + 10.2 cm) = 189.9072 cm²

The area of one ornament is the area of two cones:

  one ornament area = 2×189.9072 cm² ≈ 379.8 cm²

60 ornaments will be 120 cones, so will have a total surface area of ...

  total area = 120(189.9072 cm²) = 22,788.864 cm²

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If one bottle of paint will cover 201 cm², then the number of bottles of paint required is ...

  (22788.864 cm²)/(201 cm²/bottle) ≈ 113.4 bottles

5 0
3 years ago
X squared = −169. A= undefined B= 13 C= ±13 D= −13
mash [69]

Answer:

A.   Undefined.

Step-by-step explanation:

There is no real square root of a negative number.

7 0
3 years ago
What is the answer to -6<21
adell [148]

Answer:

Step-by-step explanation:

I've already answered this question.

8 0
3 years ago
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