Mathematics, 03.04.2021 22:20 Description
Helium atoms have 2 electrons both have a -1 charge. Every proton has a +1 charge. If the helium atom has no charge, how many protons must it have?
Answers: 3
Mathematics, 20.06.2019 18:02
Let w = 4. enter > , < , or = to compare the expressions. 3w² + 1 10w + 8
Answers: 1
Mathematics, 21.06.2019 13:40
In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?
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Mathematics, 21.06.2019 14:30
Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12
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Mathematics, 21.06.2019 17:00
Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.
Answers: 1
Helium atoms have 2 electrons both have a -1 charge. Every proton has a +1 charge. If the helium ato...
Social Studies, 29.10.2020 16:40
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