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Questions in Grade Middle-school

[Terjawab] Solve the system of equations: \[ 2x - y = 4 \] \[ 5x - 2.5y = 10 \]

[Terjawab] Olga worked 37.5 hours last week at the library and earned $12.50 an hour. If she gets a $2.50 per hour raise, how many hours will she have to work to make the same amount of money as she did last week?

[Terjawab] Allison has [tex]\frac{1}{2}[/tex] cup of yogurt for making fruit parfaits. Each parfait requires [tex]\frac{1}{8}[/tex] cup of yogurt. How many parfaits can she make?

[Terjawab] How can you rewrite \(72 + (8 + 19)\) to make it easier to add?

[Terjawab] How do I change \(2 \frac{2}{5}\) to a decimal?

[Terjawab] What is 4.2223 as a fraction?

[Terjawab] Chris and Lisa went shopping and spent a total of $25.50. Lisa spent $13.50 more than Chris. How much did Lisa spend?

[Terjawab] Is an aluminum pie plate an example of an alloy?

[Terjawab] How do you write 0.05 repeating as a fraction?

[Terjawab] While shopping, Santiago spent $57. If the amount he spent was 30% of his savings, how much savings did he have before he shopped?