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Elza [17]
3 years ago
14

If n is prime number then 2n-1 is prime also?​

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

Step-by-step explanation:

Prime numbers are number that can only be divided by itself and 1.

E.g 2,3,5,7,11,13,17,19,23,29 etc.

So, note that this sequence doesn't have a pattern, it is neither Geometry Progression nor Arithmetic Progression.

Now, let take look at the model given

If n is prime, then 2n-1 is prime

Let take 5 for

n=5 is a prime number

2n-1=2(5)-1=10-1=9

9 is not a prime number so the model doesn't work

A prime number doesn't have sequence so, it cannot be model with sequence.

I hope this help

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Simplest radical form​
Anton [14]

Answer:

Step-by-step explanation:

A(7,1), B(5,-6)

(AB)² = (-6-1)² + (5-7)² = 53

AB = √53

3 0
3 years ago
In what time the compound amount of Rs 60000 at 10% rate is rs 79860?​
Ksenya-84 [330]

Answer:

P= Rs 60000

A= Rs 79860

T=1 & 1/2 year = 3/2 years

    = 3/2 x 2 = 3 half years

R= ?  

Applying the formula A= P (1+r/100)^T

           79860  = 60000 (1+ r/100)^3

                  79860/60000 = (1+r/100)^3

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                     11/10 = 1+r/100

                     11/10 -1 = r/100

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Step-by-step explanation:

8 0
3 years ago
PLEASE LOOK AT THIS multiple choice, thanks.
Y_Kistochka [10]

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Find the solutions to the equation by completing the square.
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Answer:

Step-by-step explanation:

hello :

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8 0
4 years ago
What is the answer for -3-(a-2)=7a+15
ale4655 [162]

Answer:

-5.25

Step-by-step explanation:

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=>3a-6=7a+15

=>-15-6=7a-3a

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=>a=-21/4=-5.25

hope this helps please mark as brainliest:)

7 0
3 years ago
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