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Illusion [34]
3 years ago
9

Simplify (4x^2 + 12x - 9) + (7x^2 - x + 3)

Mathematics
2 answers:
AVprozaik [17]3 years ago
5 0

Answer:

11x^2 + 11x - 6

Step-by-step explanation:

  1. <em>Remove</em> the parenthesese.
  2. <u>Add like terms</u>, 4x^2 and 7x^2.
  3. After that, <em>subtract</em> x from 12x, that's 11x.
  4. then<em> add</em> -9 and 3, and that's -6.

Then you're left with 11x^2 + 11x - 6

I hope this helps!

jasenka [17]3 years ago
3 0

Answer:

The correct answer is 11x²  + 11x - 6

Step-by-step explanation:

The given expression is,

(4x² + 12x - 9) + (7x² - x + 3)

<u>Simplify the given expression</u>

(4x² + 12x - 9) + (7x² - x + 3) = 4x² + 12x - 9 + 7x² - x + 3

= 4x² + 7x²  + 12x - x - 9 + 3

= 11x²  + 11x - 6

Therefore the simplified form of given expression is 11x²  + 11x - 6

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stellarik [79]

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7 0
4 years ago
9y-5x=20 i dono how to do this x and y intercwpt thingy
bagirrra123 [75]
     9y - 5x = 20
or, (9y - 5x) / 20 = 1
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compare with x/a + y/b = 1
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8 0
3 years ago
Smplify the radical expression. How many different ways can you write your answer?
mel-nik [20]

Answer:

2xy\sqrt[3]{2x^2z} and 2xy(2x^2z)^{\frac{1}{3}}.

Step-by-step explanation:

The given radical expression is

\sqrt[3]{16x^5y^3z}

We have to simplify the above expression.

The above expression can be written as

\sqrt[3]{(2\times 8)(x^{3+2})y^3z}

\sqrt[3]{(2\times 2^3)(x^3\times x^2)y^3z}    [\because a^{m+n}=a^ma^n]

\sqrt[3]{(2^3x^3y^3)(2x^2z)}

\sqrt[3]{(2xy)^3}\sqrt[3]{2x^2z}    [\because (ab)^m=a^mb^m]

2xy\sqrt[3]{2x^2z}    [\because \sqrt[n]{x^n}=x]

It can be written as exponent form.

2xy(2x^2z)^{\frac{1}{3}}    [\because \sqrt[n]{a}=a^{\frac{1}{n}}]

Therefore, the required expressions are 2xy\sqrt[3]{2x^2z} and 2xy(2x^2z)^{\frac{1}{3}}.

5 0
3 years ago
At a farm the ratio of cows to horses was 9:2. if there were 72 cows at the farm, how many horses were there?
OLga [1]

ratio of 9:2

 means for every 9 cows there are 2 horses

72/9 = 8

 8 x 2 = 16

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4 0
4 years ago
Read 2 more answers
Of the 465 species of shark that
asambeis [7]

Answer: 16%

Step-by-step explanation:

The total number of species of shark evaluated = 465

Number of sharks currently endangered or threatened = 74

Percent of sharks endangered = (Number of sharks / Total number of sharks evaluated) x 100%

= (74/465) x 100%

= 0.1591 x 100%

= 15.91%

Round 15.91% to the nearest whole percent = 16%

Thus, 16% of the total sharks evaluated are currently endangered or threatened.

6 0
3 years ago
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