The daily high temperature of Elk Creek drops by 1.2°C every day. What is the net change in the daily high temperature after two
2 answers:
Answer:
16.8°C
Step-by-step explanation:
Given :The daily high temperature of Elk Creek drops by 1.2°C every day.
To Find:What is the net change in the daily high temperature after two calendar weeks?
Solution:
Since we are given that The daily high temperature of Elk Creek drops by 1.2°C every day.
1 week = 7 days.
So, 2 weeks = days
Temperature drops per day = 1.2°C
So, temperature drops in 14 days =
Hence the net change in the daily high temperature after two calendar weeks is 16.8°C.
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Hello!
Recall that:
can be rewritten as:
Use the equation for the derivative of a log expression:
Substitute in the values in the expression:
Answer:
If is divisible by 3, the n is also divisible by 3.
Step-by-step explanation:
We will prove this with the help of contrapositive that is we prove that if n is not divisible by 3, then, is not divisible by 3.
Let n not be divisible by 3. Then can be written in the form of fraction
, where x and y are co-prime to each other or in other words the fraction is in lowest form.
Now, squaring
Thus,
It can be clearly seen that the fraction is in lowest form.
Hence, is not divisible by 3.
Thus, by contrapositivity if is divisible by 3, the n is also divisible by 3.