Both numbers are prime in which of the following pairs of numbers? O A 5 and 9
B. 7 and 9
O c. 5 and 6
O D. 5 and 7
O E. 7 and 8

Here we just need to identify the pair of prime numbers, we will see that the correct option is D: 5 and 7.

Prime numbers are the numbers that can only be divided by themselves and 1.

So we just need to test each one of the given numbers to see if these are primes or not, for example for 6 we have:

6/3 = 2

6/2 = 3

So 6 is not a prime.

Similarly for 8 we have:

8/2 = 4

8/4 = 2

So 8 is not a prime.

In the other hand, 5 and 7 can only be divided by themselves, thus 5 and 7 are primes.

Then the correct option is D, 5 and 7.

If you want to learn more about prime numbers, you can read:

link

☪ Question :

☇ Both numbers are prime in which of the following pairs of numbers ?

☐ 5 and 9

☐ 7 and 9

☐ 5 and 6

☑ 5 and 7 ---- Answer !!

☐ 7 and 8

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☥ Let's explore about prime numbers and composite numbers !!

Alright , Let's check all the options :

☐ 5 and 9

⤿ 5 is a prime number as it can only be divided by 1 and itself but 9 is not a prime number as it can be divided by more than two numbers ( i.e 1 , 3 and 9 )

☐ 7 and 9

⤿ 7 is a prime number as it can only be divided by 1 and itself but 9 is a composite number as it can be divided by 1 , 3 and 9.

☐ 5 and 6

⤿ 5 is a prime number as it can only be divided by 1 and itself but 6 is a composite number as it can be divided by more than two numbers ( i.e 1 , 3 and 6 )

☑ 5 and 7

⤿ Yeah ! 5 and 7 are prime numbers as they only have two factors which are one and itself.

☐ 7 and 8

⤿ 7 is a prime number as it can only be divided by 1 and itself but 8 is a composite number as it can be divided by more than two numbers ( i.e 1 , 2 , 4 and 8 )

Hope I helped!

Have a wonderful day ! ツ

~TheAnimeGirl ♡

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answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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