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elena-s [515]
3 years ago
6

Which function is decreasing?

Mathematics
1 answer:
madam [21]3 years ago
7 0

Answer:

A

outdoor temperature as a function of time

Step-by-step explanation:

If you put the temperture as a function of time, every passing hour or minute the tempurture decreases resulting in a decrease in your function.

This can also be shown in a graph were the tempuerture is the x and the time is the y. Each hour that passes the temputure goes down until night falls and the temputure reaches a constant rate of tempurture

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vazorg [7]

Answer:

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∴  We get, a=1b=−k,c=9

⇒  It is given that roots are real and distinct.

∴  b2−4ac>0

⇒  (−k)2−4(1)(9)>0

⇒  k2−36>0

⇒  k2>36

⇒  k>6 or k<−6

∴  We can see values of k given in question are correct.

8 0
2 years ago
a store marks up the wholesale price of a skateboard by 112%. The retail price is $35. What is the wholesale price of the skateb
koban [17]
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Step by step
We know mark up is 112%
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3 0
1 year ago
Find (3) if<br> f(x)=x2 + 2x2-x-1
Olenka [21]

Answer:

The correct answer is:

f(3)=23

Step-by-step explanation:

By evaluating first, and then the mathematical calculation, we have:

f(3)= 3^{2} + 2 ×3^{2} - 3 -1 

= 9 +18 -3-1  

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Step-by-step explanation:

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