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4 years ago

Triangle ABC was dilated using the rule Do.4. Triangle

Mathematics

2 answers:

pshichka [43]4 years ago

6 0

Answer:

The correct option is B. The length of OB' is 3 units.

Step-by-step explanation:

The rule of dilation is D₀,₄. It means dilation by scale factor 4 with center of dilation is origin.

$\text{Scale factor}=\frac{\text{Distance between center and any point of the image}}{\text{Distance between center and corresponding point of the Preimage}}$

$\text{Scale factor}=\frac{OB'}{OB}$

$4=\frac{OB'}{\frac{3}{4}}$

$4\times \frac{3}{4}=OB'$

$3=OB'$

The length of OB' is 3 units. Therefore the correct option is option is B.

eimsori [14]4 years ago

4 0

Answer:

B on edge

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

see the attached figure to better understand the problem

Let

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step 1

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step 2

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4 years ago

Read 2 more answers

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kipiarov [429]

Assuming that CB is tangent, this is just a right triangle with a hypotenuse of 20 and a side of 12 so by the Pythagorean Theorem:

20^2=12^2+x^2

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x^2=400-144

x^2=256

x=16

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3 years ago