I’m really sorry. I really try to figure this out but I’m Real bummed out that I can’t even get this. What even is this question? Like tell me the answer if you can even find out ._.
To model half-life, use the formula

. Here,

is the amount remaining after a length of time

.

is the amount that you start with.

is the half-life. You plug in 50 for

, 10 for

, and 25 for

. You get

.
4x - y = 10, y = 2x - 2
4x - (2x -2) = 10
4x - 2x + 2 = 10
2x = 8
x = 4
4(4) - y = 10
-y = -6
y = 6
So x = 4 y= 6
Hope this helps!
Brainliest and a like is much appreciated!
Hhjhhhu did I need ooo 40
Answer:
All statements are true
Step-by-step explanation:
1. The statement
is true, because
is the sum of first 499 terms,
is the sum of first 500 terms, and all these terms are positive, then the sum of smaller number of terms is less than the sum of larger number of terms.
2. The statement
is true, because
is the sum of first 500 terms,
is 500th term and the sum of 500 terms is greater than the 500th term.
3. The statement
is true, because
is the sum of first 1 term that is exactly 
All statements are true.