3 years ago

I’m pretty sure the answer is a ?

Mathematics

1 answer:

irina [24]3 years ago

7 0

I believe that it’s B

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Mei-Lin has 4 toy trucks. Each truck is 8 inches long. Mei-Lin lines the truck up end to end. How long are all 4 trucks when lin

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32 inches

Step-by-step explanation:

1 trucks= 8 inches

4 truck= (4×8) 32 inches

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3 years ago

The table represents a linear function. what is the slope of the function?

Gelneren [198K]

Answer:

-4

Step-by-step explanation:

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m = ( -26 - -2)/(2 - -4)

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Step-by-step explanation:

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Amaya sold half of her comic books and then bought sixteen more. She now has 36. With

Gemiola [76]

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Step-by-step explanation:

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4 years ago

Use logarithmic differentiation to find the derivative of the function. y = x2cos x Part 1 of 4 Using properties of logarithms,

Arisa [49]

ANSWER

${y}^{'} = 2x \cos(x) - {x}^{2} \sin(x)$

EXPLANATION

The given function is

$y = {x}^{2} \cos(x)$

We take natural log of both sides;

$ln(y) = ln({x}^{2} \cos(x) )$

Recall and use the product rule of logarithms.

$ln(AB) = ln(A ) + ln(B)$

This implies that:

$ln(y) = ln({x}^{2} ) + ln( \cos(x) )$

$ln(y) = 2 ln({x} ) + ln( \cos(x) )$

We now differentiate implicitly to obtain;

$\frac{ {y}^{'} }{y} = \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) }$

Multiply through by y,

${y}^{'} = y( \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) ) })$

Substitute y=x²cosx to obtain;

${y}^{'} = {x}^{2} \cos(x) ( \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) ) } )$

Expand:

${y}^{'} = 2x \cos(x) - {x}^{2} \sin(x)$

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3 years ago