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goblinko [34]
3 years ago
9

This is my home work plese help

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
6 0

Answer:

345.63

Step-by-step explanation:

39.5*8.75=345.625

345.625=345.63

nataly862011 [7]3 years ago
3 0

Answer: 345 dollars a week

Step-by-step explanation:

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➷ You have to collect like terms

In other words, add together the values that have x in them and add together the values that don't

4x + 7x = 11x

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A scalene triangle has sides measuring 200 feet, 107 feet, and 221 feet. What is the
jenyasd209 [6]

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Step-by-step explanation:

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Half a number plus 2.5 times that number equals 18. What is the number?
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When using the rational root theorem, which of the following is a possible root of the polynomial function below f(x)=x^3-5x^2-1
uranmaximum [27]

Answer:

\Large \boxed{\sf \ \ 7 \ \ }

Step-by-step explanation:

Hello, please consider the following.

The polynomial function is

x^3-5x^2-12x+14

The rational root theorem states that each rational solution

   x=\dfrac{p}{q}    

, written in irreducible fraction, satisfies the two following:

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   q is a factor of the leading coefficient

In this example, the constant term is 14 and the leading coefficient is 1. It means that p is a factor of 14 and q a factor of 1.

Let's proceed with the prime factorisation of 14:

14 = 2 * 7

Finally, the possible rational roots of this expression are :

   1

   2

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and we need to test for negative ones too

   -1

   -2

   -7

   -14

From your list, the correct answer is 7.

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

7 0
3 years ago
What is the absolute value of rational number 3.7? Thanks in advance :)
siniylev [52]
The absolute value of rational number 3.7 is 3.7
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