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Ne4ueva [31]
2 years ago
10

1) what is the initial value?

Mathematics
1 answer:
JulsSmile [24]2 years ago
8 0

Step-by-step explanation:

1) for t = 0, the initial value is -0.45 gal. which is funny. when it is really cold, do people add water to the tank somehow instead of consuming water ?

so I guess, that system is really reliable with values greater than 0.

0.0875t = 0.45

t = 5.142857143...°

so, I guess, 6° is the lowest reasonable value for this function.

2) as for any line function, the slope is the rate of change.

so, 0.0875 gal more per 1 degree more in temperature.

3) t = 90

w = 0.0875×90 - 0.45 = 7.425 gal

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Hello!

lets solve your equation step by step:
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Answer:

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Can somebody solve this: x^4+2x^3-25x^2-26x+120
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Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   1 • 15 = 15

Step-2 : Find two factors of  15  whose sum equals the coefficient of the middle term, which is   8 .

     -15    +    -1    =    -16

     -5    +    -3    =    -8

     -3    +    -5    =    -8

     -1    +    -15    =    -16

     1    +    15    =    16

     3    +    5    =    8    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  3  and  5

                    x2 + 3x + 5x + 15

Step-4 : Add up the first 2 terms, pulling out like factors :

                   x • (x+3)

             Add up the last 2 terms, pulling out common factors :

                   5 • (x+3)

Step-5 : Add up the four terms of step 4 :

                   (x+5)  •  (x+3)

            Which is the desired factorization

 (x + 5) • (x + 3) • (x - 2) • (x - 4)

3 0
3 years ago
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