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3 years ago

Select the correct answer.

Mathematics

2 answers:

andrew-mc [135]3 years ago

5 0

Answer:

C. $\displaystyle (-2, 32)\:and\:(2, -32)$

Step-by-step explanation:

The best way to put this is that the integer signs MUST be interchanged.

I am joyous to assist you anytime.

vekshin13 years ago

3 0

Answer:

Step-by-step explanation:

Googling this, we find that when -f(x) = f(-x), our function is odd. This means that when we multiply our input by -1, our output will multiply by -1 as well.

A is incorrect because when we multiply our input (-1) by -1, our output does not change

B is incorrect because it isn't even a function -- there are multiple outputs for the input

C is correct because when we multiply the input by -1 (as -2 goes to 2), the output multiplies by -1 (32 goes to -32)

D is incorrect because when we multiply the input by -1, the output stays the same. This is an example of an even function.

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Question 1a. i) $x=1.8m$

Question 1a. ii) $Volume=27.6m^3$

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Explanation:

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For the smalll triangle you can write:

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$Volume=(1/3)\pi \times (1m)^2\times 1.8m=0.6\pi m^3$

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This is the same frustrum from the equation of above, thus ist volume is 27.6m³.

ii) Lower frustrum

$\dfrac{x}{2.0m}=\dfrac{x+2.4m}{2.5m}$

$2.5x=2(x+2.4m)\\\\2.5x=2x+4.8m\\\\0.5x=4.8m\\\\x=9.6m$

$Volume=(1/3)\pi \times (2.5m)^2\times (9.6m+2.4m)-(2.0m)^2\times (9.6m)$

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