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Tasya [4]
4 years ago
7

PLZ HELP! ASAP! x^2 - 25 /(x-5) ------------ x+3

Mathematics
1 answer:
erastova [34]4 years ago
5 0

Answer:

Answer:

1

x

−

5

Explanation:

x

2

−

25

is a

difference of squares

a

2

−

b

2

=

(

a

−

b

)

(

a

+

b

)

x

2

−

25

=

x

2

−

5

2

=

(

x

−

5

)

(

x

+

5

)

(

x

+

5

)

(

x

+

5

)

(

x

−

5

)

=

1

x

−

5

with restriction

x

≠

5

Jacobi J.

Jun 22, 2018

Answer:

1

x

−

5

Explanation:

The key realization is that our denominator fits the difference of squares pattern

a

2

−

b

2

, which factors as

(

a

+

b

)

(

a

−

b

)

.

We can rewrite

x

2

−

25

as

(

x

+

5

)

(

x

−

5

)

, which allows us to rewrite our original expression as

x

+

5

(

x

+

5

)

(

x

−

5

)

The

x

+

5

terms on the top and bottom cancel, and we're left with

x

+

5

x

+

5

(

x

−

5

)

1

x

−

5

Hope this helps!

2

x

8

x

+

24

?

How do you divide:

(

4

x

2

−

10

x

−

24

)

divide by (2x+3)?

How do you divide:

5

a

2

+

6

a

−

9

into

25

a

4

?

How do you simplify

3

m

22

+

27

m

n

−

12

3

m

?

How do you simplify

25

−

a

2

a

2

+

a

−

30

?

Hope I did not make it to complated

Please give me Brainliest

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Pavel [41]

Answer:

a) For this case we can use the binomial model since we assume independent events and the same probability for each trial is the same p =0.15

b) P(X=0)=(10C0)(0.15)^0 (1-0.15)^{10-0}=0.1969

c) P(X=3)=(10C3)(0.15)^3 (1-0.15)^{10-3}=0.1298

d) P(X \geq 1)= 1-P(X

And using the result from part a we got:

P(X \geq 1)= 1-P(X

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n p)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

Solution to the problem

Part a

For this case we can use the binomial model since we assume independent events and the same probability for each trial is the same p =0.15

Part b

For this case we want this probability:

P(X=0)

And replacing we got:

P(X=0)=(10C0)(0.15)^0 (1-0.15)^{10-0}=0.1969

Part c

For this case we want this probability:

P(X=3)

And replacing we got:

P(X=3)=(10C3)(0.15)^3 (1-0.15)^{10-3}=0.1298

Part d

For this cae we want thi probability:

P(X \geq 1)

And we can use the complment rule and we got:

P(X \geq 1)= 1-P(X

And using the result from part a we got:

P(X \geq 1)= 1-P(X

4 0
3 years ago
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Nadusha1986 [10]

Answer:  Srry if I'm wrong 252

Step-by-step explanation:

10 x 6= 60

8 x 12= 96

8 x 12= 96

10 x 11= 110

60 + 96 + 96 +110= 252.

Also I use the same platform for my school

6 0
3 years ago
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Answer:

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Fill in the blanks below with the correct units. (a) Karen's desk is about 3 ? (b) Dan's refrigerator has a mass of 80 ? (c) The
Nezavi [6.7K]

Hello!

To solve this exercise, let's think a bit and choose the best option for each alternative.

<h2>(a) Karen's desk is about 3...</h2>

Well, a desk with 3mm or 3cm is too small, and with 3km is too big.

In this case, the best option is 3 meters (even though it's big, it's the best option).

<h2>(b) Dan's refrigerator has a mass of 80...</h2>

Usually, a refrigerator is heavy. So the best option is kilograms.

<h2>(c) The bucket holds about 5... of water.​</h2>

5ml of water is too little, it fits in a spoon. The correct option is liters.

Answers:

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b. kilogr

8 0
1 year ago
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