A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever). However, one third can be express as 1 divided by 3, and since 1 and 3 are both integers, one third is a rational number.

hope it helps!

5 0

3 years ago

How to solve for x/ extraneous solutions

taurus [48]

Answer:

Step-by-step explanation:

$\log_ab=c\iff a^c=b\\\\===================\\\\Domain:\ 8x>0\to x>0\\\\\log_4(8x)=3\iff4^3=8x\\\\8x=64\qquad\text{divide both sides by 8}\\\\x=8\in D$

3 0

3 years ago

John goes to a bookstore. he wants to buy at. most 25 books and spend at most $75. paperback books cost 1.75 and har cover books

Yanka [14]

Answer:

x + y ≤ 25
1.75x + 2.50y ≤ 75

Step-by-step explanation:

Paperback books = x
Hard cover books = y

<u>Number of books:</u>

x + y ≤ 25

<u>Cost of books:</u>

1.75x + 2.50y ≤ 75

The system above is the one we need

6 0

3 years ago