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oksian1 [2.3K]
3 years ago
15

The temperature at midnight was -6 degrees celsius. By 7 am, it had risen 6.5 degrees. By noon, it had risen another 3.9 degrees

. Then a storm blew in, causing it to drop 4/25 degrees by 6 am. what was the temperature at 6pm?​
Mathematics
1 answer:
Studentka2010 [4]3 years ago
4 0

Answer: 4.15 degrees

Step-by-step explanation:

-6 + 6.5 + 3.9 - 4/25 = -6 + 6.5 + 3.9 - 0.25 = 4.15 degrees (assuming that the am in the fourth sentence is a typo)

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Answer:

58

Step-by-step explanation:

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Trava [24]

Answer:

(y + 1) • (y - 4)

Step-by-step explanation:

Trying to factor by splitting the middle term

1.1     Factoring  y2-3y-4

The first term is,  y2  its coefficient is  1 .

The middle term is,  -3y  its coefficient is  -3 .

The last term, "the constant", is  -4

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Step-2 : Find two factors of  -4  whose sum equals the coefficient of the middle term, which is   -3 .

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Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -4  and  1

                    y2 - 4y + 1y - 4

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

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

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

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            Which is the desired factorization

Final result :

 (y + 1) • (y - 4)

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