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IgorLugansk [536]
3 years ago
15

How do i find the derivative of

9 \div \sqrt{x} " alt="9 \div \sqrt{x} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
4 0
Possible derivation:
d/dx(3)
The derivative of 3 is zero:
Answer: = 0
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Two students solved the same multi-step equation. Which student is correct? Explain the error. Student A Student B 2x - 4(3x + 6
Gnom [1K]

Answer:

Student B is correct

Student A failed to distribute -4 and -6 when opening the brackets in the first step

Step-by-step explanation:

The solution Student A gave was:

2x - 4(3x + 6) = -6(2x + 1) - 4

2x - 12x + 6 = -12x + 1 - 4

-10x + 6 = -12x - 3

2x = -9

x = -4 _1 2 ( -4 1/2)

The solution Student B gave was:

2x - 4(3x + 6) = -6(2x + 1) - 4

2x - 12x - 24 = -12x - 6 - 4

-10x - 24 = -12x - 10

2x = 14

x = 7

Student B is correct.

Explanation of the error:

Student A failed to distribute -4 and -6 when opening the brackets in the first step.

That is,

2x - 4(3x + 6) = -6(2x + 1) - 4

To open this bracket, we will distribute, -4 and -6 so that we get

2x (-4 × 3x) + (-4 × +6) = (-6×2x) + (-6 × +1) - 4

Then we will get

2x -12x -24 = -12x -6 -4

Adding the like terms

-10x - 24 = -12x - 10

Collecting like terms

-10x + 12x = -10 + 24

∴ 2x = 14

x = 14 / 2

Hence,

x = 7

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3 years ago
Applying the properties of exponents, which mathematical operation changes 2 1/3 to 2?
e-lub [12.9K]

Hope this helps!

Stay safe and have a great day :D

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Cube M has an edge length of
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Answer:

4

Step-by-step explanation:

6*(8*2)^2/(6*8^2)=2^2=4

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Step-by-step explanation:

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3 years ago
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Your answer is x = 78! Hope this helps!
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