Answer:

Step-by-step explanation:
The model shows that there are 40 tiles which were divided into 4 per group. This results into 10 groups. That is:

Therefore, the expression modeled by the arrangement of the tiles is 
Answer:
b=-8
Step-by-step explanation:
Sorry I don't have time to show work right now and write it down but this is the answer.
The one on the right is correct. please give brainliest.
Answer:
1/2
Step-by-step explanation:
if you find the LCD of the numbers, you will find that it is 8. Then, you divide both of them by 8 and you get 1/2
Hope this helped a bit :)
Answer is A, basically using the Pythagorean theorem but in a slightly different way, should still get you the same answer.