th0master09 th0master09

03-05-2016
Mathematics

contestada

From the set {1, 3, 5}, use substitution to determine which value of x makes the equation true.
20 - 2x = 10
5
1
3
none of these

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apologiabiology apologiabiology

03-05-2016

{1,3,5}
ie, sub 1, 3 and 5 for x and see which one is true

20-2(1)=10
20-2=10
18=10
false

20-2(3)=10
20-6=10
14=10
false

20-2(5)=10
20-10=10
10=10

true

answer is 5

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