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Fantom [35]
3 years ago
14

Find the absolute maximum of m(t)=t^3-12t^2-144t and justify your answer​

Mathematics
1 answer:
ruslelena [56]3 years ago
3 0

Answer:

Step-by-step explanation:

m(t)=t³-12t²-144t

Take the derivative of t:

t'=3t²-24t-144

Set it to 0:

3t²-24t-144=0

Solve for t:

t²-8t-48=0

(t-12)(t+4)=0

t=12 or -4

On a graph, you'll find that the maximum value occurs at t=-4 ..............

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Ms. Wang is shopping for a new refrigerator. Brand A costs $569 and uses 635 kilowatt-hours per year. Brand B costs $647 and use
katen-ka-za [31]

Answer:

Savings on electricity per year by brand B = 114.3 - 104.76 = $9.54

Step-by-step explanation:

Ms. Wang is shopping for a new refrigerator. Brand A costs $569 and uses 635 kilowatt-hours per year. Brand B costs $647 and uses 582 kilowatt-hours per year.

Let's assume he buys brand B, so he already has a loss over the price of the commodity that is , loss = 647 - 569 =$78

Cost of electricity = $0.18

Now in the case of electricity,

spending on Brand A = 635\times 0.18 = $114.3

spending on Brand B = 582\times 0.18 = $104.76

Savings on electricity per year by brand B = 114.3 - 104.76 = $9.54

5 0
3 years ago
Show all your work for 3 4 and 5, please
drek231 [11]

Answer:

I can't see the picture so I can't sovle it  

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
PLS HELP!!! WILL GIVE A LOT OF POINTS!!! <br><br><br><br> dont forget the show your work pls
kolbaska11 [484]

Answer: it might be 8

Step-by-step explanation: Write a distance formula:  x^2  - x^1    

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I hope its right

7 0
2 years ago
6. What is the greatest common factor of the following expression? *<br> 15y3 – 40y
Nady [450]

Answer:

I'm not sure what 15y3 is, but I'll take a guess.

If the only numbers are 15, 3, and -40, then the greatest common factor is 1.

If the only numbers are 15 and 3, then it's three.

If the only numbers are 15 and -40, it would be 5.

5 0
3 years ago
Need answer please!!!!!!!
ozzi

Answer:

Step-by-step explanation:

A=P(1+r/n)^nt

A=56057(1+((0.095)/4))^(4)2.5

A=$138922.0053

3 0
3 years ago
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