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2 years ago

Janson has quarters and dimes in his pocket. he counted 42 coins that added up to $7.50

Mathematics

2 answers:

vlada-n [284]2 years ago

7 0

Answer:

28 quarters and 5 dimes

7(Q)+5(D)

7(4)+5(10)

28Q 50D Q=quarters D=dimes

it would be more efficient to do the substitution method bc its faster and easier

scoray [572]2 years ago

4 0

I think Jason has 57

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Naya [18.7K]

Answer:

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b) $\mathbf{\sigma_p =0.01732}$

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