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n200080 [17]
3 years ago
14

Choose the correct simplification and demonstration of the closure property given: (4x3 + 3x2 − 6x) − (10x3 + 3x2).

Mathematics
2 answers:
ANTONII [103]3 years ago
6 0

Answer:

After 1818, the Oregon Country was controlled

solely by the United States.

solely by Great Britain.

jointly by United States and Great Britain.

jointly by the United States and Spain.Step-by-step explanation:

Mashcka [7]3 years ago
5 0

<u>Answer</u>:

 −6x³ − 6x; is a polynomial

<u>Explanation</u>:

  • \left(4x^3\:+\:3x^2\:-\:6x\right)\:-\:\left(10x^3\:+\:3x^2\right)

               [ open brackets ]

  • \left4x^3\:+\:3x^2\:-\:6x\right\:-10x^3 - 3x^2

                [ group terms ]

  • 4x^3-10x^3+3x^2-3x^2-6x    

              [ final answer ]

  • -6x^3-6x .......this is a polynomial as it contains variable, coefficients.
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barxatty [35]

Answer:

Set  

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−

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=

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Since  

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3 0
3 years ago
A certain radioactive material decays in such a way that the mass in kilograms remaining after t years is given by the function
Angelina_Jolie [31]

The mass of radioactive material remaining after 50 years would be 48.79 kilograms

<h3>How to determine the amount</h3>

It is important to note that half - life is the time it takes for the amount of a substance to reduce by half its original size.

Given the radioactive decay formula as

m(t)=120e−0.018t

Where

t= 50 years

m(t) is the remaining amount

Substitute the value of t

m(t) = 120e^-^0^.^0^1^8^(^5^0^)

m(t) = 120e^-^0^.^9

Find the exponential value

m(t) = 48.788399

m(t) = 48.79 kilograms to 2 decimal places

Thus, the mass of radioactive material remaining after 50 years would be 48.79 kilograms

Learn more about half-life here:

brainly.com/question/26148784

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7 0
2 years ago
15 POINTS!!!!!!!!
Novay_Z [31]
X2=9 has only one solution, which is 4.5
4 0
3 years ago
Read 2 more answers
Tickets for the school concert were 3$ and 2$. If 245 tickets were sold for a total of $630, how much of each kind were sold?
Hatshy [7]
2x + 3y = 630
x + y = 245 then you want to get rid of x so in the second equation × by -2 and get -2x -2y =-490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x= $105 and 2x=210 and 3y=420 210 +420=630
7 0
3 years ago
A. Convert 39/7 to a mixed number
saul85 [17]
The answer to this question is A). 39 b). 56
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3 years ago
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