Answer:

Step-by-step explanation:

Hello :
4√2-7√2= (4-7)√2 = -3√2
Answer:idk
Step-by-step explanation:
idk
5b-2=13 add 2 to both sides
5b=15 divide both sides by 5
b=3
The volume would be 0.9 x 4.2
This means it is 90% smaller
Don't forget to round the nearest tenth place. That's the first decimal, so you answer should only have 2 digits.