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Veseljchak [2.6K]
3 years ago
9

Are these right? HELP PLEASE !!

Mathematics
2 answers:
MakcuM [25]3 years ago
4 0

Answer:

No

The second one is distribution, they distributed the -3 to inside the parenthesis.

Step-by-step explanation:

tino4ka555 [31]3 years ago
4 0
The second one isn’t correct .
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Which number<br> not in scientific notation?<br> 6x10^24<br> 2.01x10^-2<br> 1.3x10^-4<br> 0.5x10^3
klasskru [66]

Answer:

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Step-by-step explanation: A number in scientific notation has to be between 1 an 10. It can't be less than one or 10.

7 0
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The problem -2x=9 equals the answer x=-4.5...is that correct or incorrect?
erastovalidia [21]
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5 0
3 years ago
Hi i just need help checking if my answer is correct I have been working on a implicit diffrention problem and I need some help.
SSSSS [86.1K]

Answer:

  \dfrac{dy}{dx}=\dfrac{-4x^3y+2y^3+3x^2y^3}{x^4-6xy^2-3x^3y^2}

Step-by-step explanation:

Normally, when I do this, I differentiate each term first with respect to x then with respect to y. In this solution, I differentiated the entire expression with respect to x, then with respect to y. That makes separating the dx and dy coefficients much easier, so the solution almost falls into your lap.

  -x^4 y + 2 x y^3 + x^3 y^3=0 \qquad\text{given}\\\\(-4x^3y+2y^3+3x^2y^3)dx+(-x^4+6xy^2+3x^3y^2)dy=0\\\\(-4x^3y+2y^3+3x^2y^3)dx=(x^4-6xy^2-3x^3y^2)dy\\\\\boxed{\dfrac{dy}{dx}=\dfrac{-4x^3y+2y^3+3x^2y^3}{x^4-6xy^2-3x^3y^2}}

6 0
2 years ago
1) A tank can be filled by one pipe in 9 minutes and drained by another pipe in 12 minutes. Write an equation that could be used
Triss [41]

Answer:

1). 1/9 - 1/12 = 1/t

2). 36 minutes

3). 24 hours

4). 30 quarts of Type A cream and 60 quarts of Type B cream are needed

Step-by-step explanation:

8 0
3 years ago
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