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MrRa [10]
3 years ago
7

What is 221,000,000,000,000,000,000 expressed in scientific notation?

Mathematics
2 answers:
Fiesta28 [93]3 years ago
8 0
Your answer is g 2.21 x 1020
Anuta_ua [19.1K]3 years ago
3 0
That is not right it is something to do with 21 or 20 but there more than one answer 
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X + y = 10<br> x - y = 2
lys-0071 [83]

Answer:

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Step-by-step explanation:

just find the number that will match or u could just plug in one of those number and find other number

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I need help on these questions please help if you know
musickatia [10]
42, 63, 75 is the answer
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Find the values of x and y.
kotykmax [81]

Answer:

y=9 and x=18

Step-by-step explanation:

You know that y+3=12 so 12-3=9

You know that x-3=15 so 15+3=18

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3 years ago
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Andrew [12]
224.9>224.92 hope it helps
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3 years ago
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a_sh-v [17]
I thinks is A or B if not I’m sorry
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