Answer and Explanation:
Since this is a 30-60-90 triangle, you can use the ratio of side lengths specific to this type of triangle:
x = 4√(2)
y = 2(4) = 8
because where 4 = T,
x = T√2 and y = 2T
so again:

-2n(5 + n - 8 - 3n)
-10n - 2n² + 16n + 6n²
4n² + 6n
Answer:
100%
Step-by-step explanation:
3.75 each, 6 friends, $20. 6 multiplied by 3.75 is 18.75. you can buy 5 sandwiches