I think the answer is b i've never learned this sorry :(
Answer:
(a) 13.85 °C
Step-by-step explanation:
The temperature difference is a decaying exponential function of time. Here, it decreases from an initial difference of 15 °C to 10 °C after 25 minutes. So, that temperature difference can be modeled as ...
ΔT = 15(10/15)^(t/25)
We want to find the value of this at t=55. It is ...
ΔT = 15(2/3)^(55/25) ≈ 6.15
This is the amount the temperature of the drink is below room temperature.
drink temperature = (20 - 6.15) °C = 13.85 °C
The temperature of the drink after 55 minutes is about 13.85 °C.
I'm in college, I honestly don't know what it is but I hope you find it!
Let the set of all Odd multiples of 9 between 2 and 82 be denoted by D, then, using set-builder notation,
The odd multiples of 9, , in the range form the set
Each member of the set is a term of the arithmetic progression
where the values of range from 0 to 4, or
Putting these facts together, we get the result
Learn more about set-builder notation here: brainly.com/question/17238769
Step-by-step explanation:
Replace x and y.
Solve for y.
Square both sides.
This is the inverse function or you can also say