3 years ago

Explain how you know that the equations 1/4=2x and .25x=2have the same solution

Mathematics

2 answers:

kobusy [5.1K]3 years ago

6 0

You would know because 1/4 = .25 and are interchangeablemaking the equations the same

Amiraneli [1.4K]3 years ago

3 0

They don't have the same solution

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natka813 [3]

Answer:

Your answer is 12

Step-by-step explanation:

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3 years ago

If f(x)=ln(sin(2x)), f''(π/4) is equal to

Licemer1 [7]

Use the chain rule to compute the second derivative:

$f(x)=\ln(\sin(2x))$

The first derivative is

$f'(x)=(\ln(\sin(2x)))'=\dfrac{(\sin(2x))'}{\sin(2x)}=\dfrac{\cos(2x)(2x)'}{\sin(2x)}=\dfrac{2\cos(2x)}{\sin(2x)}$

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Then the second derivative is

$f''(x)=(2\cot(2x))'=-2\csc^2(2x)(2x)'$

$f''(x)=-4\csc^2(2x)$

Then plug in π/4 for x :

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4 0

4 years ago

-9+8k=7+4k(if there is no solution,type in ''no solution'') k= Answer

Shtirlitz [24]

Answer:

k = 4

Step-by-step explanation:

-9 +8k = 7+4k

Subtract 4k from each side

-9 + 4k = 7

Add 9 to each side

4k = 16

Divide by 4

k = 4

Plug in the value you got for k:

-9 + 8(4) ? 7 + 4(4)

-9 + 32 ? 7 + 16

23 ? 23

23 = 23

4 0

4 years ago

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