There is a typo in the equation:
The equation need to be f(t)= 28t-t2+4
You need to calculate the derivative of f(t): f'(t)= 28-2t
f is increasing if f'(t) is positive ==> 28-2t>0 ==> t<14
f is decreasing if f'(t) is negative ==> 28-2t<0 ==> t>14
f reach its maximum when f'=0 ==> 28-2t=0 ==> t=14
The concentration is increasing between for 0 < t < 14
The concentration is decreasing between for 14 < t < 24
The maximum is achieved when t=14
I hope this will help
Answer:
There are 52 cards in a deck. The total number of outcomes possible when picking 2 cards and replacing them is 52 * 52 = 2704.
There are 4 10s and 4 aces so the total number of successful outcomes = 4 * 4 = 16.
Probability = 16 / 2704 = 1 / 169
Answer:
A. True
Explanation:
The solution of a linear inequality in two variables, like Ax + By > C is an ordered pair (x, y), that produces a true statement when the values of x and y are substituted into the inequality.
Hope this helps! :)
Angle y is the same as 85 degrees
Answer:
620
Step-by-step explanation:
7 is near 10 so you round to the next number on the 10 table
