Mathematics, 02.11.2020 03:00 jeremiah1212

Isabella has some dimes and some quarters. She has at most 25 coins worth a minimum of $4.45 combined. If Isabella has 17 dimes, determine all possible values for the number of quarters that she could have. Your answer should be a comma separated list of values. If there are no possible solutions, submit an empty answer.

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Answer from: Quest

so, converting firstly the mixed fractions to improper fractions and then "adding".

$\bf \stackrel{mixed}{2\frac{9}{10}}\implies \cfrac{2\cdot 10+9}{10}\implies \stackrel{improper}{\cfrac{29}{10}}~\hfill \stackrel{mixed}{5\frac{4}{15}}\implies \cfrac{5\cdot 15+4}{15}\implies \stackrel{improper}{\cfrac{79}{15}} [-0.35em] ~\dotfill$

$\bf -\cfrac{29}{10}+\left( -\cfrac{79}{15} \right)\implies -\cfrac{29}{10}-\cfrac{79}{15}\implies \stackrel{\textit{using the lcd of 30}}{\cfrac{-(3)29-(2)79}{30}}\implies \cfrac{-87-158}{30} \cfrac{-245}{30}\implies -\cfrac{49}{6}\implies -8\frac{1}{6}$

Answer from: Quest

yrguevfytbrtuyr4

step-by-step explanation:

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Answer from: Quest

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.

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Isabella has some dimes and some quarters. She has at most 25 coins worth a minimum of $4.45 combine...