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3 years ago

If x – 9 is a factor of x2 – 5x – 36, what is the other factor a. x – 4 b. x 4 c. x – 6 d. x 6

2 answers:

5 0

X^2 -5x -36 = x*x -9x+4x -9*4 = x(x-9) +4(x-9) = (x+4)(x-9)

so the second other factor is x+4 so hope that choice wan being x+4 than this will be right just you missed the sign pf plus

hope this will help you

LekaFEV [45]3 years ago

5 0

Answer:

a ) Other factor will be ( x + 4 ) .

Step-by-step explanation:

Given : x²– 5x – 36.if x – 9 is a factor

To find : what is the other factor .

Solution : We have given that x²– 5x – 36.= 0

On factoring x² + 4x - 9x– 36= 0

Taking common x from first two terms and -9 from last two terms .

x ( x + 4) -9 ( x + 4) = 0

on grouping

(x -9) ( x+4) = 0.

Therefore, a ) Other factor will be ( x + 4 ) .

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3 years ago

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2 years ago

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3 years ago

The probability that a randomly chosen citizen-entity of Cygnus is of pension age† is approximately 0.7. What is the probability

victus00 [196]

Answer: 0.2401

Step-by-step explanation:

The binomial distribution formula is given by :-

$P(x)=^nC_xp^x(1-p)^{n-x}$

where P(x) is the probability of x successes out of n trials, p is the probability of success on a particular trial.

Given : The probability that a randomly chosen citizen-entity of Cygnus is of pension age† is approximately: p =0.7.

Number of trials : n= 4

Now, the required probability will be :

$P(x=4)=^4C_4(0.7)^4(1-0.7)^{4-4}\\\\=(1)(0.7)^4(1)=0.2401$

Thus, the probability that, in a randomly selected sample of four citizen-entities, all of them are of pension age =0.2401

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3 years ago