sanjanadevaraj26
17.03.2021 •
Mathematics
Twice a number less than three is 23.Find the number.
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Ответ:
11
Step-by-step explanation:
C²=23
2C=0
C=2
Substitute C=2 in the first equation 2C=23
2C=23
C=11.5
Approximately C=11
Ответ:
1.332 × 10-3
Step-by-step explanation:
you move the decimal point to the right until there's only one digit on the left side of it. the exponent is 3 because that's the number of places you moved the decimal point, and it's negative because you moved it to the right. if you move the decimal to the left it is positive, to the right is negative :)