23 can round to 20 and 21 can also round to 20 so all u do is 20x20=400 so 400 is your estimated answer
The answer to this is 36.
Answer:
y = 1 - x
Step-by-step explanation:
9x + 9y = 9 ( divide through by 9 )
x + y = 1 ( subtract x from both sides )
y = 1 - x
Answer:
15 is the volume of it
Step-by-step explanation:
hope I helped
Answer:
4.25
Step-by-step explanation: