anna12345677
anna12345677
29-03-2016
Mathematics
contestada
72 = r 90 Whats R in this equation
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apologiabiology
apologiabiology
30-03-2016
rmemeber you can do anything to an equaiton as longn as you do it to both sides
also x times 1/x=1 since x/x=1
also x times 1=x
72=r90
divide both sides by 90
72/90=r
0.8=r
r=0.8
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