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4 years ago

F(x)

class="latex-formula"> ; g(x) = 8x - 13 Find f(g(x)).

Mathematics

1 answer:

jolli1 [7]4 years ago

8 0

Answer:

f(g(x)) = $\sqrt{8x-22}$

Step-by-step explanation:

Substitute x = g(x) into f(x), that is

f(g(x))

= f(8x - 13)

= $\sqrt{8x-13-9}$

= $\sqrt{8x-22}$

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Alborosie

Answer:

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Step-by-step explanation:

The first nine equals 900, and the second equals 90.

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4 years ago

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3 years ago

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3 years ago

A = multiples of 5 between 14 and 26

Olenka [21]

Answer:

(A ∪ B) = {15, 17, 19, 20, 21, 23, 25}

Step-by-step explanation:

Multiples of 5:

{0, 5, 10, 15, 20, 25, ...}

So between 14 and 26:

A = {15, 20, 25}

Odd numbers between 14 and 26:

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3 years ago

I am leaning pre-cal right now and I don't understand it. I did arctan (3/-5) but got it wrong, how do you do this?

Gemiola [76]

9514 1404 393

Answer:

149.04°

Step-by-step explanation:

You must consider the signs of the components of the vector. The value -5+3i will be in the 2nd quadrant of the complex plane.

When you use the single-argument arctan function, it will tell you the angle is -30.96°, a 4th-quadrant angle. (arctan( ) is only capable of giving you 1st- or 4th-quadrant angles.)

You find the 2nd-quadrant angle by adding 180° to this value:

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The attachments show the calculation using a suitable calculator (1st) and a spreadsheet (2nd). The spreadsheet function ATAN2(x,y) gives the 4-quadrant angle in radians, considering the signs of the two arguments. Here, we converted it to degrees. The calculator can be set to either degrees or radians.

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3 years ago