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slega [8]
3 years ago
14

The circumference of a circle changes from 20 to 4 after a dilation. What was the scale factor of the dilation?

Mathematics
2 answers:
8_murik_8 [283]3 years ago
8 0

Answer:

The answer is the option B

\frac{1}{5}

Step-by-step explanation:

we know that

To find the scale factor divide the circumference of the dilated circle by the circumference of the original circle

so

scale\ factor=\frac{4}{20}=\frac{1}{5}

Gelneren [198K]3 years ago
8 0

Answer: B. \frac{1}{5}

Step-by-step explanation:

Given: The circumference of a circle changes from (pre-image)20 to 4(image) after a dilation.

Then, the scale factor is given by :-

\text{Scale factor}=\frac{\text{Circumference of image}}{\text{Circumference of pre-image}}\\\\\Rightarrow\text{Scale factor}=\frac{4}{20}\\\\\Rightarrow\text{Scale factor}=\frac{1}{5}

Hence, the scale factor after dilation =\frac{1}{5}

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Elisa ran a total of 8 4/5 miles on Saturday and Sunday. If she ran 5 1/4 miles on Saturday, how many miles did she run on Sunda
stepladder [879]

Answer: 3\dfrac{11}{20}\ \text{miles}

Step-by-step explanation:

Given

Elisa run a total of 8\frac{4}{5} miles on Saturday and Sunday.

If she runs 5\frac{1}{4} miles on Saturday

Then, distance traveled on Sunday is given by

\Rightarrow 8\dfrac{4}{5}-5\dfrac{1}{4}\\\\\Rightarrow \dfrac{44}{5}-\dfrac{21}{4}\\\\\Rightarrow \dfrac{44\times 4}{5\times 4}-\dfrac{21\times 5}{4\times 5}\\\\\Rightarrow \dfrac{71}{20}\\\\\Rightarrow 3\dfrac{11}{20}\ \text{miles}  

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3 years ago
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Answer:

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Step-by-step explanation:

range- find the largest number and subtract the smallest number from it

Set 1: 12-1 =11

Set 2: 230-22 =208

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Answer:

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Step-by-step explanation:

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