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4 years ago

Whats the answer for (5x + 8)(4x² + 6x - 8)

1 answer:

4 0

$(5x + 8)(4x^2 + 6x - 8)\\ \\ 5x(4x^2 + 6x - 8) + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 32x^2 + 48x - 64 \\ \\ 20x^3 + (30x^2 + 32x^2) + (-40x + 48x) - 64 \\ \\ 20x^3 + 62x^2 + 8x - 64 \\ \\$

The final result is: 20x^3 + 62x^2 + 8x - 64.

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Please help me out and find BOTH values of x and y

Montano1993 [528]

Answer:

y=37 x= 5or 4

Step-by-step explanation:

3 0

3 years ago

Which binomial is a factor of 9x2 – 64? 3x – 8 9x – 32 3x 32 9x 8

aalyn [17]

The binomial factor of the equation $\rm 9x^2 -64$ is 3x-8.

<h3>What is a binomial factor?</h3>

The algebraic expression which contains only two terms is called binomial. It is a two-term polynomial. Also, it is called a sum or difference between two or more monomials.

Factoring binomials means breaking down a binomial expression into its simplest form.

Binomials are algebraic expressions with two terms.

The given binomial is;

$\rm 9x^2 -64$

The binomial is determined in the following steps given below.

$\rm =9x^2 -64\\\\= (3)^2x^2-8^2\\\\= (3x)^2-8^2\\\\= (3x-8)(3x+8)$

Hence, the binomial factor of the equation $\rm 9x^2 -64$ is 3x-8.

To know more about the Binomial factor click the link given below.

brainly.com/question/1493247

3 0

3 years ago

What percent of 28 is 21

ss7ja [257]

If we take 28 to be the 100%, what is 21 off of it?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
28&100\\
21&p
\end{array}\implies \cfrac{28}{21}=\cfrac{100}{p}\implies p=\cfrac{21\cdot 100}{28}$

5 0

4 years ago

Read 2 more answers

13)

motikmotik

See below for the response to each question

<h3>The variable</h3>

This is the item that is being surveyed.

The surveyed item is birth weights

Hence, the variable is birth weights

<h3>The units of the variable</h3>

From the question, we have:

Average birth weight is 6 pounds 8 ounces.

Hence, the units of the variable are pounds and ounces

<h3>The population</h3>

This is the total number of babies in Southeast Asia

Hence, the population of interest is the babies in Southeast Asia

<h3>The individual</h3>

This is the people in the survey

Hence, the individual in the study is the 100 babies that were randomly surveyed

<h3>The parameter of interest</h3>

This is the value that gives the required information.

Hence, the parameter of interest is the average birth weight

<h3>What is the statistic involved</h3>

The statistic is the average