aluminumfoil

You can create an equation for this: 16.75 + 34x is less than or equal to 390         (i have no idea how to do that symbol sorry!!)

--> 34x is less than or equal to 373.25

--> x=10 (rounded; originally 10.6 but you can't have 10.6 people)  

The maximum number of people is 10.

I think the answer is 32.

Ok, so I think the answer is the square root of 70. Based on the information I drew out a picture. Then I made two equations: 5^2 + x^2 = a^2 and 14^2 + x^2 = b^2. Because triangles ABD and CBD are right triangles I used the Pythagorean theorem to create those two equations. Then I can add a^2 and b^2 together to get c^2. So, I add both equations together: 5^2+x^2 + x^2 +14^2 = 19^2. Then solving the equation: 5^2 + 14^2 + 2x^2 = 19^2. I end up with x^2 = 70 which is the square root of 70. I hope this helps! 

There are 52 terms in the sequence. If you divide each of the numbers in 2: 2,4,6,...,102,104 = 1,2,3,...,51,52.

2+104 = 4+102 = 6+100 which means ((2+104)x52)/2 equals the sum of the sequence, which is 2756, and if you divide that by 7 you get 393 r5.

So, the answer is 5. 

sqrt152881=391

3+9+1=13

I think it's 5382

5+3+8+2=18

18^3=5382