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jasenka [17]
3 years ago
14

4x2 = 52

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer:

x=13

OR

x=-13 and 13

hmm I think

kifflom [539]3 years ago
8 0

Answer:

b) 13 and -13

a) 13

I hope it helps

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we'll proceed along the same lines as the previous one.

the cost of the boots is 90.10 and that includes 6.25% sales tax, so if "x" is the 100%, then 90.10 is really the 106.25%, because is including the extra 6.25%.


\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 90.10&106.25\\ x&100 \end{array}\implies \cfrac{90.10}{x}=\cfrac{106.25}{100} \\\\\\ 9010=106.25x\implies \cfrac{9010}{106.25}=x\implies 88.8=x


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4 years ago
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