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trapecia [35]
2 years ago
6

Simplify (8x2 − 1 2x3) − (7x3 − 3x2 1). −5x3 11x2 − 2 5x3 − 11x2 2 x3 2x2 x3 x3 − 2x2 − x3.

Mathematics
2 answers:
Harrizon [31]2 years ago
8 0

Answer:

-5x^3 +11x^2-2

(8x^2 − 1 + 2x^3) − (7x^3 − 3x^2 + 1)Distribute the minus sign(8x^2 − 1 + 2x^3) − 7x^3 + 3x^2 - 1I like to line them up vertically from largest to smallest2x^3 + 8x^2 − 1− 7x^3 + 3x^2 - 1------------------------------5x^3 +11x^2-2

correct me if im wrong

Komok [63]2 years ago
7 0

Answer:

-5x^3 +11x^2-2

Step-by-step explanation:

(8x^2 − 1 + 2x^3) − (7x^3 − 3x^2 + 1)

Distribute the minus sign

(8x^2 − 1 + 2x^3) − 7x^3 + 3x^2 - 1

I like to line them up vertically from largest to smallest

2x^3 + 8x^2 − 1

− 7x^3 + 3x^2 - 1

-----------------------------

-5x^3 +11x^2-2

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The volume of a cylindrical container
Ray Of Light [21]

Answer:

A. \frac{3}{4}\textrm{ gal}

Step-by-step explanation:

Given:

Volume of the cylindrical container before dilation, V_{i}=1\textrm{ gal}

Scale factor of the dilation, SF=\frac{3}{4}

Therefore, the volume of the dilated cylinder is given as:

V_{f}=SF\times V_{i}

Plug in 1 gal for V_{i} and \frac{3}{4} for SF. Solve for V_{f}. This gives,

V_{f}=\frac{3}{4}\times 1\\V_{f}=\frac{3}{4}\textrm{ gal}

Therefore, the volume of the dilated cylinder is \frac{3}{4} gallons.

3 0
3 years ago
tina bought three pairs of jeans and three sweaters that were on sale she paid a total of 105.69 if the jeans were 26.93 how muc
OLga [1]

Answer:

Each sweater costs $8.30

Step-by-step explanation:

j = jeans

s = sweater

3j + 3s = 105.69

3(26.93) + 3s = 105.69

80.79 + 3s = 105.69

-80.79          -80.79

3s = 24.9

/3   /3

s = 8.3 ($8.30)

Check:

3j + 3s = 105.69

3(26.93) + 3(8.3) = 105.69

80.79 + 24.9 = 105.69

105.69 = 105.69

Hope this helps!

4 0
2 years ago
Marco paid 25.00 for a meal including a 25% tip how much was the meal befor he added the tip
Ksivusya [100]

                                        STEP BY STEP

                             PLEASE HAVE A SHEET OF PAPER

  • write 25.00 on the sheet of paper i TOLD YOU  to get.
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<h2>                                <em>ANSWER</em></h2><h2><em>                                      25</em></h2>
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3 years ago
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ZanzabumX [31]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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Lyrx [107]

Answer:

The answer is "6.3 and 5.25"

Step-by-step explanation:

Please find the complete question in the attached file.

Throghout the question the calculated points are:

(0,0) , \ \ (40,252) \\(0,0) , \ \ (40,210) \\

Formula for Calculating slope:

M=\frac{y_2-y_1}{x_2-x_1}

For First point slope:

M=\frac{252-0}{40-0}=\frac{252}{40}= 6.3  \ \frac{people}{mi^2}

For second point slope: M=\frac{210-0}{40-0}=\frac{210}{40}=\frac{21}{4}= 5.25  \ \frac{people}{mi^2}

8 0
3 years ago
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