Posted by Mary on Friday, May 2, 2014 at 10:13pm.
solve the equations
21E7=0
I came up with 0.33
am I right or wrong

algebra  Reiny, Friday, May 2, 2014 at 10:19pm
easy way to tell, just sub it in
Left Side= 21E7
= 21(.33)  7
= .07
≠ 0
so , no, you are wrong
21E  7 = 0
21E = 7
E = 7/21 = 1/3 as the accurate answer.
1/3 = .3333.... , not .33
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