Ask question

Ask question

All categories

3 years ago

7

Which relation represents a function?

1 answer:

Zielflug [23.3K]3 years ago

6 0

C. Because the no x repeats itself in any of the ordered pairs.

You might be interested in

How do you find the percent change?

antoniya [11.8K]

Hello!!
To calculate the percentage increase<span>: First: work out the </span>difference<span> (</span>increase<span>) between the two numbers you are comparing. Then: divide the </span>increase<span> by the original number and multiply the answer by 100. If your answer is a negative number then this is a </span>percentage<span> decrease.
</span>let me know if u have anymore questions!:)

7 0

3 years ago

F(x) = x2 + 3x<br> g(x) = 2x – 5<br><br> Find f (x) + g(x)

AVprozaik [17]

Answer:

Step-by-step explanation:

3 0

3 years ago

X ⋅ x = ? (1 point) jjjj

liraira [26]

Answer:

x-x = 0

x+x= 2x

x×x= x^2

have a nice day...

4 0

3 years ago

sergejj [24]

Answer:

A

Step-by-step explanation:

We are given the function:

$\displaystyle f(x) = \left\{ \begin{array}{ll} 2\cos(\pi x) \text{ for } x \leq -1 \\ \\ \displaystyle \frac{2}{\cos(\pi x)}\text{ for } x > -1 \end{array} \right.$

And we want to find:

$\displaystyle \lim_{x\to -1}f(x)$

So, we need to determine whether or not the limit exists. In other words, we will find the two one-sided limits.

Left-Hand Limit:

$\displaystyle \lim_{x\to-1^-}f(x)$

Since we are approaching from the left, we will use the first equation:

$\displaystyle =\lim_{x\to -1^-}2\cos(\pi x)$

By direct substitution:

$=2\cos(\pi (-1))=2\cos(-\pi)=2(-1)=-2$

Right-Hand Limit:

$\displaystyle \lim_{x\to -1^+}f(x)$

Since we are approaching from the right, we will use the second equation:

$=\displaystyle \lim_{x\to -1^+}\frac{2}{\cos(\pi x)}$

Direct substitution:

$\displaystyle =\frac{2}{\cos(\pi (-1))}=\frac{2}{\cos(-\pi)}=\frac{2}{(-1)}=-2$

So, we can see that:

$\displaystyle \displaystyle \lim_{x\to-1^-}f(x)=\displaystyle \lim_{x\to -1^+}f(x) =-2$

Since both the left- and right-hand limits exist and equal the same thing, we can conclude that:

$\displaystyle \lim_{x \to -1}f(x)=-2$

Our answer is A.

8 0

3 years ago

Sovle for n<br><br> n-20=4-3n

deff fn [24]

Answer:

n = 1

Step-by-step explanation:

Add 20 to both sides, obtaining

n = 4 - 3n

Next, add 3n to both sides:

4n = 4

Finally, solve for n by dividing both sides by 4:

n = 1

6 0

3 years ago

Read 2 more answers