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Sedbober [7]
3 years ago
13

Question 12 onlyyyyyyyy

Mathematics
1 answer:
netineya [11]3 years ago
5 0
For number 12 you need to make an expression using the information given. a) 25g + 18r + 15b could be the expression.
b) The variables would be 25g for the 25 gold seats, 18r for the 18 red seats and 15b for the 15 blue seats. 
c) Plug in the number given according to the variables.
       25(100) + 18(250) + 15(200)
             2500 + 4500 + 3000
                   7000 + 3000
                        $10,000
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a^2+15^2=17^2

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a^2+225=289

Isolate the variable. Subtract 225 from both sides:

a^2+225-225=289-225\\a^2=64

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