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natulia [17]
3 years ago
5

Find the ratio in lowest terms of 20 girls and 15 boys​

Mathematics
1 answer:
Mila [183]3 years ago
7 0

Answer:

4:3

Step-by-step explanation:

The ratio is 20 girls to 15 boys as it says 20:15 ,

but this is simply 4 parts to 3 parts or 4:3

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The scale factor on a scale drawing of machine part is 15 1 /8. If the part is 3 7/8 inches long as the drawing, how long is the
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Answer:

Option D) 58 39/64 inches​

Step-by-step explanation:

we know that

The scale drawing is

15\frac{1}{8}

convert to an improper fraction

15\frac{1}{8}=\frac{15*8+1}{8}=\frac{121}{8}

That means

121 in in the actual, represent 8 in on a scale drawing

To find how long is the actual part for 3 7/8 inches long as the drawing

Apply proportion

First convert to an improper fraction

3\frac{7}{8}=\frac{3*8+7}{8}=\frac{31}{8}

\frac{121}{8}\frac{actual}{drawing} =\frac{x}{(31/8)}\frac{actual}{drawing}\\ \\x=121(31/8)/8\\ \\x=\frac{3,751}{64}\ in  

convert to mixed number

\frac{3,751}{64}\ in=\frac{3,712}{64} +\frac{39}{64} =58\frac{39}{64}\ in

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3 years ago
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2 years ago
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What is the slope of the line shown?
earnstyle [38]

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