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3 years ago

If f(x) = (xm + 9)2, which statement about f(x) is true?

2 answers:

6 0

I would say none of these .

for x to be even then f(x) = f(-x) for all values of x in the domain.
Suppose x=1 and m=1 then f(x) = 20. f(-1) is 16 so f(x) does not equal f(-x)

for it to be odd then either f(x) = -f(x) or f(x) + f(-x) = 0 . Looking at teh above example neither is true.

That is an odd value of m . if you use m=2 you have exactly the same effect so its not even or odd for an even value of m.

So unless you've got a very restricted domain for the function none of these statements are true.

Volgvan3 years ago

6 0

Answer: The answer is b

f(x) is an even function for all even values of m

Step-by-step explanation:

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Is 93.43 an integer or not

Serggg [28]

Answer:

The answer is no

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3 years ago

Write as a fraction in simplest form.

seropon [69]

Answer:

2/4=1/2

3/6=1/2

4/16=1/4

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3 years ago

How do you think we could use estimating irrational numbers?

bekas [8.4K]

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An irrational number is a number that cannot be written as a fraction. It is a non-repeating, non-terminating decimal. Approximate square root of numbers that are not perfect squares and put them on the number line.

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3 years ago

Expand the following (4/5d - 7e)2

tensa zangetsu [6.8K]

Answer: $\dfrac{16d^2}{25}+49e^2-\dfrac{56de}{5}$

Step-by-step explanation:

Given

The expression is

$(\dfrac{4d}{5}-7e)^2$

Use identity $(a-b)^2=a^2+b^2-2ab$

Apply identity

$\Rightarrow \left( \dfrac{4d}{5}-7e\right)^2=\left( \dfrac{4d}{5}\right)^2+(7e)^2-2\times \left( \dfrac{4d}{5}\right)(7e)\\\\\Rightarrow \left( \dfrac{4d}{5}-7e\right)^2=\dfrac{16d^2}{25}+49e^2-\dfrac{56de}{5}$

4 0

3 years ago

A ball is thrown from a height of 70 feet with an initial downward velocity of 4/fts. The ball's height h (in feet) after t seco

torisob [31]

In this one, you must make h = 0.

You get : $-16t^2-4t+70$ which can be further simplified to $8t^2+2t-35$ if you divide all of the numbers by -2.

Here you can use the quadratic formula again!
You get the numbers to be : 1.97 and -2.22

I had made a mistake to think that negative numbers can be included but in these questions, you can't have negative numbers as your answer. So the correct answer is 1.97!

3 0

3 years ago