Answer:
I have no idea Im so sorry i tried to understand all i could think of is x+y=99
Answer:

Step-by-step explanation:

Distribute 2 through the parentheses


Hope I helped!
Best regards! :D
Answer:
1.0
Step-by-step explanation:
You are rounding to the nearest tenth, so you should have only 2 places remaining (0.0). So, you look to the 7 to change the 9. 7 is bigger than 5, so you round 9 up. Since 9 plus 1 equals 10, the final answer is 1.0.
Hope this helps! :)