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2 years ago

Polynomials // ALGEBRA 2PLEASE HELP!! I only have half of the answer completed ...

Mathematics

1 answer:

Elanso [62]2 years ago

6 0

Answer:

-5b^4 -11b^2

Step-by-step explanation:

Polynomials are added by adding like terms. Like terms have the same variable(s) to the same power(s).

The simplified form of the given sum is ...

$(-5b^2-4b^4)+(-6b^2-b^4)\\\\=-5b^2-4b^4-6b^2-b^4\qquad\text{eliminate parentheses}\\\\= -5b^2-6b^2-4b^4-b^4\qquad\text{group like terms}\\\\=(-5-6)b^2+(-4-1)b^4\qquad\text{show coefficients}\\\\=-11b^2-5b^4\qquad\text{combine coefficients}\\\\=\boxed{-5b^4-11b^2}\qquad\text{decreasing order of exponents (standard form)}$

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Answer:

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Step-by-step explanation:

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3 years ago

The length of the side of a square is equal to the perimeter of the square divided by four. Which shows the correct graph relati

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Answer:

On a coordinate plane, the x-axis is labeled Perimeter of a square, and the y-axis is labeled Side length of a square. A line goes through points (4, 1), (8, 2).

Step-by-step explanation:

Let

x ----> the perimeter of the square

y ---> the side length of the square

Remember that

The perimeter of the square is given by the expression

$P=4b$

where

b is the length side of the square

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$b=\frac{1}{4}P$

That means

A ordered pair in the coordinate plane following the rule

(x,y) -----> (x,x/4)

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y=x/4

therefore

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Because

For the point (4,1)

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y=4/4=1 ----> is ok

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3 years ago

Graph the inequality. 3x+2y<2

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Answer:

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Step-by-step explanation:

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3 years ago

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Angelina_Jolie [31]

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The arithmetic mean for a given set of numbers is defined as the central value for the given set of numbers.

Given that Sasha runs a 5k race. Her time in minutes is recorded in the table:

Jan 39. 55
Feb 40. 51
Mar 41. 01
Apr 37. 76
May 35. 32
June 33. 28
July 34. 38
Aug 36. 48
Sept 39. 87
Oct 50. 32
Nov 40. 59
Dec 41. 71.

The mean for the given set of terms can be calculated by the total sum of all the terms divided by the total number of terms.

Mean = $\dfrac {39. 55+40. 51+41. 01+37. 76+35. 32+33. 28+34. 38+36. 48+39. 87+50. 32 +40. 59+41. 71} {12}$

Mean = 39.23

Thus the mean of the given set of terms is 39.23.

The outlier term in the given set of terms is 50.32. If we exclude this outlier term, then the mean will be given as below.

Mean = $\dfrac {39. 55+40. 51+41. 01+37. 76+35. 32+33. 28+34. 38+36. 48+39. 87+40. 59+41. 71} {11}$

Mean = 38.22

The difference between the mean including the outlier and excluding the outlier is given below.

Difference = 39.23 - 39.22

Difference = 1.01

Hence we can conclude that the difference of mean for the given set of terms including the outlier and excluding the outlier is 1.01.

To know more about the mean, follow the link given below.

brainly.com/question/12513463.

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See picture for set up.

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