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Aloiza [94]
3 years ago
9

Three polynomials are factored below, but some coefficients and constants are missing. All of the missing values of a, b, c, and

d are integers 1. x^2-2x-15=(ax+b)(cx+d) 2. 2x^-6x-36x=2x(ax+b)(cx+d) 3. 4x^2+10x+4=(ax+b)(cx+d) . Fill in the table with the missing values of a, b, c, and d.
Mathematics
1 answer:
Travka [436]3 years ago
5 0

Answer:

  1. (1, -5, 1, 3)
  2. (2, -12, 1, 3)
  3. (4, 2, 1, 2)

Step-by-step explanation:

Obviously, factors can be written in any order. So, there are multiple answers to this question.

1. x^2 -2x -15 = (x -5)(x +3) . . . . (a, b, c, d) = (1, -5, 1, 3)

__

2. 2x^2 -6x -36 = 2(x^2 -3x -18) = 2(x -6)(x +3) . . . . (a, b, c, d) = (2, -12, 1, 3)

__

3. 4x^2 +10x +4 = 2(2x^2 +5x +2) = 2(2x +1)(x +2) . . . . (a, b, c, d) = (4, 2, 1, 2)

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25 + 14 = blank + 25
sleet_krkn [62]

Answer:

14

Step-by-step explanation:

25 + 14 = 14 + 25

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6 0
3 years ago
(2a+b)^2÷(3b-1) when a= -2 and b=5
WINSTONCH [101]
Evaluate (2 a + b)^2/(3 b - 1) where a = -2 and b = 5:
(2 a + b)^2/(3 b - 1) = (5 - 2×2)^2/(3×5 - 1)

3×5 = 15:
(5 - 2×2)^2/(15 - 1)

 | 1 | 5
- | | 1
 | 1 | 4:
(5 - 2×2)^2/14

2 (-2) = -4:
(-4 + 5)^2/14

5 - 4 = 1:
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6 0
3 years ago
A bag has 5 red marbles, 4 blue marbles, 8 green marbles, and 3 yellow
kozerog [31]

<u>Answer:</u>

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<u>Step-by-step explanation:</u>

Percentage: Green marbles/Total marbles

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<u>Percentage formula:</u> \frac{a}{b} (100)<u />

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Hence, 40% of the total marbles are green.

Hoped this helped.

BrainiacUser1357

7 0
3 years ago
What is 35-14+27 i really need help pls anser fast
zhuklara [117]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Let D be the event of selecting a marble with dots.

Let P be the event of selecting a purple marble.

The probability of selecting a marble with dots, P(D)=0.2

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We want to determine the probability of selecting a purple marble given that the marble has dots on it, P(P|D)

By the definition of conditional probability:

P(P|D)= \dfrac{P(P \cap D)}{P(D)} \\= \dfrac{0.1}{0.2}\\ =0.5

The probability of selecting a purple marble given that the marble has dots on it is 0.5.

4 0
3 years ago
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