The number 20<span> is a composite number so, it is possible to factorize it. In other words, 20 can be divided by 1, by itself and at least by 2 and 5. A composite number is a positive integer that has at least one positive divisor other than one or the number itself. In other words, a composite number is any integer greater than one that is not a prime number.</span>
<span>The prime factorization of </span>20<span> = 2</span>2•5.
<span>The prime factors of </span>20<span> are 2 and 5.</span>
Answer:
f^-1(x) = (2x + 4) / 3
Step-by-step explanation:
- switch 'y' with 'x'
x = 3/2y - 2
- solve for 'y'
x + 2 = 3/2y
- multiply each side by 2
y = (2x + 4) / 3
The inverse will be 2x+3/4 or D in your picture
If we have a less than (or less than or equal to) sign with an absolute value, that indicates a conjunction where values can be expressed as an interval. The absolute value will be less than the number to the right, but it will also at the same time be greater than the negative of the number to the right. Don't forget that absolute value is a distance measurement, and the distance from the origin to -4 is 4 units, just like the distance from the origin to +4 is 4 units. Our particular absolute value will look like this:
![\left[\begin{array}{ccc}x-6\end{array}\right] \leq 4](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Dx-6%5Cend%7Barray%7D%5Cright%5D%20%20%5Cleq%204)
and
![\left[\begin{array}{ccc}x-6\end{array}\right] \geq -4](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Dx-6%5Cend%7Barray%7D%5Cright%5D%20%20%5Cgeq%20-4)
. Solving the first absolute value we have that

and the second one is

. In interval notation we need to put x between the 2 inequality signs, which will look like this:

. And there you go!