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Katen [24]
2 years ago
15

I need help with this, please.

Mathematics
1 answer:
Elena-2011 [213]2 years ago
8 0

Answer:

it can not cleared clear but it can not cleared

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1. Consider the function f(x) = 5x^3 - 31x^2 - 129x + 27
NeX [460]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

1.- f(x) = 5x³ - 31x² - 129x + 27

a) f(9) = 5(9)³ - 31(9)² - 129(9) + 27

   f(9) = 5(729) - 31(81) - 1161 + 27

   f(9) = 3645 - 2511 - 1161 + 27

   f(9) = 0

b.- I will use synthetic division

                        5   - 31  -129  + 27       9

                               45   126  -27                            

                        5     14     -3       0

    Trinomial = 5x² + 14x - 3

Factor               5x² + 15x - 1x - 3

                        5x(x + 3) - 1(x + 3)

b)                           (x + 3)(5x - 1)

                       x₂ + 3 = 0          5x₃ - 1 = 0

                       x₂ = -3                 x₃ = 1/5

c) The roots are x₁ = 9, x₂ = -3 and x₃ = 1/5

2.-  f(x) = 3x² + 2x - 8      factor = 3x - 4

                                     x    + 2

                       3x - 4    3x² + 2x - 8

                                   -3x² + 4x

                                     0    +6x - 8

                                           -6x  + 8

                                                      0  Remainder

As the remainder was "0", 3x - 4 is a factor of 3x² + 2x - 8

3 0
3 years ago
1. The price of the video game was $60.00. Thelprice was reduced by 25%. What was the sale price of the video game? A $15.00 B.
geniusboy [140]

Answer:

The answer is A. $15.00

Step-by-step explanation:

Take 25% of 60 and that is 15. Please give me brainliest

5 0
2 years ago
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-4x - 2y = 14<br>-10x + 7y = -25<br>? I don't know how to solve systems of equations
ki77a [65]
Hope u understand...

5 0
3 years ago
The latest online craze is a new game, Khan on Seven. You get 100 points for playing the game. In addition, you get 50 points fo
Blizzard [7]

Answer: 50x+100\geq18,000

Step-by-step explanation:

Let w denotes a seven letter word which Sal will need to make to break the record.

Since  you get 50 points for each seven-letter and 100 points for playing the game.

Then the total points earned by you by making w seven letters words will be:

50x+100

Since, Sal wants to break that record, and needs 18,000 points or more to do so.

Then , the required inequality will be :

50x+100\geq18,000

3 0
3 years ago
Read 2 more answers
What is the surface area
Drupady [299]
<span>The outside part or uppermost layer of something (often used when describing its texture, form, or extent).</span>
8 0
3 years ago
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