The set of polynomials is closed under the operation of multiplication.
Mathematics, 16.04.2020 22:11 dania1524
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The set of polynomials is closed under the operation of multiplication.
A: Which equations illustrate this concept?
B: Which statements correctly explain this concept?
There may be more than one correct answer for each question. Select all correct answers for each question.
B: The sum of the polynomials (x2β3x+1) and (6x+2) is a polynomial, x2+3x+3, which shows there is closure under multiplication.
B: The sum of the polynomials (xβ3) and (x+2) is a polynomial, 2xβ1, which shows there is closure under multiplication.
B: The product of the polynomials (x2β3x+1) and (2x+2) is a polynomial, 2x3β4x2β4x+2, which shows there is closure under multiplication.
A: (xβ3)+(x+2)=2xβ1
A: (x2β3x+1)+(6x+2)=x2+3x+3
A: (x2β3x+1)(2x+2)=2x3β4x2β4x+2
A: (x2β3x+2)(x+5)=x3+2x2β13x+10
A: (3x+4)β(8x+2)=β5x+2
B: The difference of the polynomials (3xβ4) and (8x+2) is a polynomial, β5x+2, which shows there is closure under multiplication.
B: The product of the polynomials (x2β3x+2) and (x+5) is a polynomial, x3+2x2β13x+10, which shows there is closure under multiplication.
Answers: 2
Mathematics, 21.06.2019 16:00
Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).
Answers: 3
Mathematics, 21.06.2019 22:30
Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68β33 d. 6.24 = 66β25
Answers: 1
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Determine if the following statement is true or false. the normal curve is symmetric about itsΓ’β¬βΉ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about itsΓ’β¬βΉ mean, because the mean is the balancing point of the graph of the distribution. the median is the point whereΓ’β¬βΉ 50% of the area under the distribution is to the left andΓ’β¬βΉ 50% to the right.Γ’β¬βΉ therefore, the normal curve could only be symmetric about itsΓ’β¬βΉ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with oneΓ’β¬βΉ peak, which means theΓ’β¬βΉ mean, median, and mode are all equal.Γ’β¬βΉ therefore, the normal curve is symmetric about theΓ’β¬βΉ mean, mu. c. the statement is false. the mean is the balancing point for the graph of aΓ’β¬βΉ distribution, andΓ’β¬βΉ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of aΓ’β¬βΉ distribution, andΓ’β¬βΉ therefore, all distributions are symmetric about the mean.
Answers: 2
Thank you !!
The set of polynomials is closed under the operation of multiplication.
The set of polynomials is closed under the operation of multiplication.
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