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creativ13 [48]
3 years ago
14

F(x) = 3x^3 + 3x^2 - 4x - 4

Mathematics
1 answer:
dezoksy [38]3 years ago
6 0

Answer:

x = − 1 ,   2 √ 3 /3 , and − 2 √ 3 /3

Step-by-step explanation:

3x^3+3x^2-4x-4=0

By factoring, I can get simpler equations to get the roots.

x + 1 = 0, or x = -1

√ 3 x + 2 = 0, or − 2 √ 3 /3

√ 3 x - 2 = 0, or 2 √ 3 /3

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g In an experiment, 37 randomly selected drivers drove from Pontiac to Detroit at random times. The travel time for these driver
enot [183]

Answer:

CI  = ( 36,6  ;  41,4 )

Step-by-step explanation:

CI = 99,9  %       α = 0,1 %      α = 0,001

We find z scre for α = 0,001 in z -table

z(s) = - 3,08

CI =  μ₀  ±  MOE          where    μ₀  = 39 min  and   MOE = z(s) * σ/√n

CI = 39  ±   3,08 * 4,8 / √37

CI = 39  ±   2,4315

CI  = ( 36,6  ;  41,4 )

7 0
3 years ago
_____ is the current illustration used to show us how to eat a healthy diet. Basic Four Basic Four My Plate My Plate Food Pyrami
Serhud [2]

Answer:

My Plate.

<em>My Plate</em> is the current illustration used to show us how to eat a healthy diet.

  • Here is the My Plate diagram.

<em>I hope this helped at all.</em>

5 0
3 years ago
In a dog show, there will be a gold and silver medal awarded.There are 6 finalists. In how many ways can the 2 medals be awarded
Mandarinka [93]

Answer:

30

Step-by-step explanation:

Given: There are six finalists and two medals. That is it asks for the possibilities of 6 finalists taking two at a time. Say, for example the first and third finalist or the second and the sixth finalist and so on. The number of possibilities is given by $ ^nP_r $

                       $ ^nP_r = \frac{n!}{(n - r)!} $

So the number of possibilities of 6 finalists taken two at a time is $ ^6P_2 $

$ \implies \frac{6!}{(6 - 2)!} = \frac{6!}{4!}  \hspace{15mm} [n! = n \times (n-1) \times (n - 2) \times . . . 2 \times 1] $

$ \implies \frac{6 \times 5 \times 4 \times \times 3 \times 2 \times 1}{4 \times 3 \times 2 \times 1}  = 6 \times 5 = 30 $

4 0
4 years ago
Please use the photo and do the prove for #13 because I’m having a really hard time. Thanks!
rewona [7]

∠2 = ∠3 | Given

∠1 + ∠2 = 180 | Supplementary Angles Postule (If two angles are adjacent and                  ∠3 + ∠4 = 180|                                                        linear, they're supplementary)

∠1 + ∠2 = ∠3 + ∠4 | Transitive property

∠1 + ∠3 = ∠3 + ∠4 | Substitution property

∠1 = ∠4 | Subtraction Property

∠2 = ∠3 | Supplementary Congruent Theorem

7 0
3 years ago
Nelson and 3 friends rent a bounce house. It cost $50 for setup and $30 per hour. If they all split the cost, how much will each
natima [27]

Answer:

A: 50

Step-by-step explanation:

because its 50$ for setup and 30 each hour for 5 hours. so 30x5=150 +50 = 200÷ nelson and 3 friends =50$ each

8 0
3 years ago
Read 2 more answers
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