Answer:
Step-by-step explanation:
a: is not proportional
because you cant divide any of the tope numbers by the bottom numbers so u can leave the thing blanc.
b: is proportional
becuase you can divide the top and bottom by 30 so the answer is 30
hope this help :)
Answer:
f(1/3) = 6
Step-by-step explanation:
f(x) =-3x+7
Let x = 1/3
f(1/3) =-3*1/3+7
= -1 +7
= 6
Complete Question
The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 7 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 1.25 minutes.
Answer:
The probability is
Step-by-step explanation:
From the question we are told that
The start time is a = 0 minutes
The end time is b = 7 minutes
Generally the probability that a randomly selected passenger has a waiting time greater than 1.25 minutes is mathematically represented as
=>
=> 
=>
Answer:
The correct option is;
D) Neither the domain restriction nor the expression for f⁻¹(x) is correct
Step-by-step explanation:
The given function can be written as follows;
f(x) = x² - 331
The inverse of the function f(x), which is f⁻¹(x), can be found as follows;
Let f(x) = x² - 331 = y, we have;
f(x) + 331 = x²
x = √(f(x) + 331)
We replace x with f⁻¹(x) and f(x) with x, to get;
f⁻¹(x) = √(x + 331)
We note that the domain of the inverse function will include values from x ≥ -331, and the correct inverse function √(x + 331) ≠ √x - 331
Therefore, we have that neither the domain restriction nor the expression for f⁻¹(x) is correct.