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I think the smallest prime I can think of that is NOT a emirp itself would be 19.

=   x^4 - 3x^2 + 5x - 7       -    (x^3 - 3x^2 + 3x - 2)

= x ^4 - 3x^2 + 5x - 7        - x^3 + 3x^2 - 3x + 2     = .......... ?     YOU should be able to take it from here !   

What are the solutions to the equation f(x)=g(x) ?

Okay Thanks!

Wait a little bit.

I don't see anything

Determine the value of a:

Thanks!

The speed of light, according to an authority, is 299,792,458 m/s. 

Let's round that to 300,000,000 m/s simply for our convenience.

To the observers in the spaceship, the light from their headlamps would appear to travel 300,000,000 m/s.

That's because the spaceship and everything in it are shortened by their speed.  So it still looks like 300,000,00 m/s to them, because the meter stick they're measuring it with is shorter than it would be if they were standing still. 

I have one for you to think about.  If that spaceship were the ONLY thing in the entire universe, would it be moving or not?  How would you know? 

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if x and y are positive integers such that 5x + 3y = 100,

what is the greatest possible value of xy?

The greatest possible product would be if x and y are the same value so let's try that.

If x = y then 5x + 3y = 8x = 100 which ends up making x =12.5 which is not an integer.

Let's move away 1 unit and try x = 11

That would give us 5x = 55 and therefore 3y = 45 ...... that'll work

So, if I'm right       x = 11

                            y = 15

       therefore     xy = 165

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37 and 73 are also part of a smaller sequence. The list contains prime numbers in which every single permutation (including deletion) is prime

SEQUENCE:

2-2

3-3

5-5

7-7

37-37,73,3,7

73-73,37,7,3

There are only these 6 numbers in the list.

Answer to your question (if the second number isn't double-digit): 10

Answer to your question (if the second number is double-digit): 12

OK.....I hope I helped....!!!!

thank you so much for this explanation! ill be sure to take note!😎

It the mean is 22 and the standard deviation is 3,  then  25 is one standard deviation to the RIGHT of the mean.... so 34.1%  lie between 22 and 25

16 and 28    are two  standard deviations from the mean...so  2 (34.1 + 13.6)  =  95.4%  of the scores fall between 16 and 28

% < 13.......13 is  3 standard deviations below the mean.....0.1% of the scores fall below this

% > 25.......25 is 1 standard deviation to the right of the mean....the percentage of scores > than 25  =

(13.6 + 2.1 + 0.1)  =  15.8%

Number who scored > 22 ....the mean is 22.....so....50% scored > than this  =  50 juniors

Number between  19 and 25.....these scores are one std deviation on either side of the mean....so  2 (34.1)%  =  68.2%  =  about 68 juniors

The second

A =     θ     pi * r^2

          ___

          360