7x - (25x^2 + 12x) = 7x - 25x^2 - 12x = -25x^2 - 5x
Answer:
It is 18
Step-by-step explanation:
A^2+31^2=36^2
After that you simplify then solve and you'll get 18
Answer:
so far i think 9 but that's all I know for how
Step-by-step explanation:
image them turning into triangles
Answer: $15
Step-by-step explanation:
To find the markup price just multiply 30% by the amount.
30% * 50
0.3 * 50 = 15
If 
is a number that is both divisible by 4 and 5, then
4 and 5 are coprime, so we can use the Chinese remainder theorem to solve this system and find that 
is a solution to the system, where 
is any integer. Simply put, any multiple of 20 fits the bill.
Now, there are 11 numbers between 100 and 300 that are divisible by 20 (100, 120, 140, and so on). We have 
when 
, so the sum we want to compute is
