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Levart [38]
2 years ago
5

Factorise x^2-x-6 please help

Mathematics
2 answers:
Murljashka [212]2 years ago
5 0

Answer:

x^2-3x+2x-6=0

x(x-3)+ 2(x-3)=0

(x+2)(x-3)=0

x=3,-2

max2010maxim [7]2 years ago
3 0

Answer:

Ask: Which two numbers add up to -1 and multiply to -6

-3 and  

2. Rewrite the expression using the above.

(x-3)(x+2)

Step-by-step explanation:

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Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to fi
Keith_Richards [23]

Answer:

P(X = 12) = 0.0064.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 30, p = 0.2

We want P(X = 12). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 12) = C_{30,12}.(0.2)^{12}.(0.8)^{18} = 0.0064

P(X = 12) = 0.0064.

6 0
3 years ago
How to solve 6x>-24 and 9x<54 ?
djverab [1.8K]
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Hope this helps!

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