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joja [24]
3 years ago
5

Dennis takes care of private swimming pools. He charges $35 to travel to a home and then $40 per hour. The equation t = 35 + 40h

models the total charge t for h hours of service. Which ordered pair (h, t) is NOT a solution for the equation? a (4, 195) b (9, 355) c (8, 355) d (7, 315)
Mathematics
1 answer:
stepan [7]3 years ago
4 0

Answer: B

Step-by-step explanation: All you have to do is plug in the numbers and solve the equation. B is not correct, because 35+40(9) is not equal to 355.

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They have some of the same numbers 

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Write 29/9 as a mixed number.
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Select two polynomials that have a sum of 16n^3+13n^2+7n-10 A. 8n^3 - 5n +11n^2 - 5 B. 7n^2 + 8n - n^3 + 2 C. 15n^2 - 10n + 3n^3
andreyandreev [35.5K]

Answer:

Step-by-step explanation:

We have the polynomial

16n^3+13n^2+7n-10   ( 1 )

To solve this problem we have to take into account that only we can sum term with the same order in the variable. We have the polynomials

8n_{3}-5n+11n^{2}-5\\7n^2 + 8n - n^3 + 2\\15n^2 - 10n + 3n^3 - 4\\2n^2 + 12n - 5 + 8n^3

we can note (by summing term by term) that only the sum of the first and the fourth equation correspond to the given polynomial ( 1 ) of the problem. If we organize these polynomials (that is, write the equation down in a form where higher order appears first ) we have

8n^3 +11n^2 - 5n  - 5\\ 8n^3+2n^2 + 12n - 5\\

and if we sum we obtain

16n^3+13n^2+7n-10

that is what we was looking for

I hope this is useful for you

regards

7 0
3 years ago
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