4. z = 75
6. t = 4/3 or t = 1.3 repeating
ANSWER
Brayden should have expanded the parenthesis first.
EXPLANATION
The expression Brayden is trying to simplify is
To simplify this expression, the first thing to do is to expand the perfect square to obtain:
We can now distribute the negative to the terms in the parenthesis.
The glass covers represent a protection for the discs avoiding scratches or breaks in their storage.
<h3>What is a disc?</h3>
A compact disc is a type of optical device to store data in digital format, consisting of any type of format such as:
- Audio
- Images
- Video
- Documents
Compact discs are fragile because their materials are fragile under different climatic conditions and other characteristics, therefore it is necessary to deposit them in a special container that isolates it and prevents damage.
For this, synthetic glass boxes were developed in which the compact discs are deposited to prevent them from being scratched and the information from being lost.
Note: This question is incomplete because the options are missing. However I can answer it based on my prior knowledge.
Learn more about compact disc in: brainly.com/question/13982127
Answer:
400 miles per inch
Step-by-step explanation:
divided 2800 by 7 and you get 400 so yeah