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Iteru [2.4K]
3 years ago
15

A weather station of a mountain reports that the temperature is currently 0c and has been falling at a constant rate of 3c per h

our find each tempature if it counts ues to fall at this rate what will the tempature be: in half an hour?
Mathematics
2 answers:
Sedaia [141]3 years ago
5 0

Answer:

5c

Step-by-step explanation:

GREYUIT [131]3 years ago
5 0

Answer:

the answer is -6 :)

Step-by-step explanation:

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Ksivusya [100]

Answer:

520

Step-by-step explanation:

if you subtract 65 from 325, you get 260.

if you multiply 260(half the original price) you would end up with 520

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3 years ago
A triangle has sides of lengths 4, 3, and 5. Is it a right triangle Explain.​
Inessa05 [86]

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7 0
3 years ago
Answer thismath......
Karolina [17]

Answer:

you can travel 150 miles

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
g Farmer Violet wants to enclose one 990 square foot rectangular area of land using fencing. One side will use special fencing c
saw5 [17]

Answer:

Sides of the rectangular area:

x =  30  f

y =  33  f

Step-by-step explanation:

Let´s call   x  and y the sides of the rectangular area

A = x*y  = 990          y  = 990/x

The function cost is:

C = Costs ( sides x)  + costs ( sides y )

Cost of sides x    =  12*x +  10x

Cost of sides y    =  10*y  +  10 *y   =  2*10*y  = 20*y

C = 12*x + 10*x + 20*y =  22*x  + 20*y

The function cost as function of x is:

C(x)  = 22*x + 20*(990/y)  =  22*x  +  19800/x

Tacking derivative on both sides of the equation:

C´(x)  = 22  + [ - 19800/x²]

C´(x) = 0       22  - 19800/x²  =  0

Solving for x

22*x²  - 19800  =  0

22x²  =  19800

x² =  19800/22 =  900

x₁,₂ = ± 30        We dismiss negative root ( we never have negative lenghts)

Then     x =  30 f

And  y  =  990 / 30      y  = 33  

To see if x = 30 is a minimum for function C(x) we evaluate the second derivative.

C´´(x) = 2*x* 19800/x⁴      

C´´ (x) = 39600/x³    so C´´ is always greater than 0 then C (x) has a minimum at x = 30

Sides of the rectangular area are:

x  =  30

y  =  33

6 0
3 years ago
There are 16 dolphins in a pod. Each pod has the same number of males and females. The female dolphins are swimming in pairs. Ho
Drupady [299]

Answer:

4 pairs

Step-by-step explanation:


6 0
3 years ago
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