2 years ago

Y = 2x + 3 4x = y = 21 what is the value of x in the solution to the equation ?

Mathematics

1 answer:

zheka24 [161]2 years ago

3 0

What do you mean by 4x=y=21?

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Find the extreme values of the function and where they occur. f(x)=x-4sqrt(x)

Tema [17]

The extreme values of the function f(x) = x - 4sqrt(x) occur at the values of x for which f'(x) = 0

f'(x) = 1 - 2/sqrt(x) = 0
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To check for minimum or maximum,
f''(x) = 1/(sqrt(x))^3 = 1/(sqrt(4))^3 = 1/(2^3) = 1/8 => the point is a minimum.

Therefore, the minimum value = f(4) = 4 - 4sqrt(4) = 4 - 4(2) = 4 - 8 = -4 and occurs at x = 4.

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2 years ago

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baherus [9]

Answer: OPTION A.

Step-by-step explanation:

You know that the rule that will be used for the translation of the figure ABC is:

$(x,y)$ → $(x-3,\ y+4)$

You can observe in the figure that the coordinates of the point A is this:

$A(1,1)$

Then, in order to find the coordinates that will best represent point A', you need to subtract 3 from the x-coordinate of the point A and add 4 to the y-coordinate of the point A:

$A'(1-3,\ 1+4)\\\\A'(-2,5)$