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photoshop1234 [79]
3 years ago
13

Lenore’s dog gave birth to a litter of 9 puppies. Two of the puppies are male. Write ratios for the following: Number of female

puppies to the total number of puppies
Mathematics
2 answers:
serious [3.7K]3 years ago
5 0

Answer:7:9


Step-by-step explanation:

Subtract 9-2 to get the # of female puppies, them write the ratio of female puppies to total puppies

Pavel [41]3 years ago
3 0

Answer:


Step-by-step explanation:

Alright, so Lenore's dog gave birth to 9 puppies. You know the total from just this alone. Now, two are male. The ratio is 7:9, 2 of the puppies are male and all together are 9 (meaning, there are 2 male puppies and 7 are female). Hope this helps!

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\bf \begin{array}{lccclll}
&\stackrel{liters}{amount}&\stackrel{alcohol~\%}{quantity}&\stackrel{liters}{alcohol}\\
&------&------&------\\
\textit{18\% solution}&x&0.18&0.18x\\
\textit{40\% solution}&y&0.40&0.4y\\
------&------&------&------\\
mixture&10&0.20&2
\end{array}

\bf \begin{cases}
x+y=10\implies \boxed{y}=10-x\\
0.18x+0.4y=2\\
----------\\
0.18x+0.4\left( \boxed{10-x} \right)=2
\end{cases}
\\\\\\
0.18x-0.4x+4=2\implies -0.22x=-2
\\\\\\
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How to solve this equation
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\\\\
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(3x-11)^2\to (3x-11)(3x-11)\\
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\textit{or use FOIL to expand it}
\end{cases}

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