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Kay [80]
2 years ago
6

Find the scale factor where the pre-image is the small triangle and the image is the large triangle.

Mathematics
2 answers:
allsm [11]2 years ago
8 0

Scale factor is the ratio of two corresponding sides.

Here we have two triangles, where the preimage is the smaller triangle and the image is the larger triangle.

So scale factor =14/18 = 7/9

And to find the missing variable, we need to set the ratio.

7/9 = 28/x

Cross multiplying both sides

7x = 28*9

x = 36

BARSIC [14]2 years ago
7 0

Answer:  The required scale factor is \dfrac{9}{7}.

Step-by-step explanation:  We are given to find the scale factor of the dilation from the small triangle to the large triangle.

We know that

scale factor of dilation is given by

S=\dfrac{\textup{length of a side of the dilated figure(D)}}{\textup{length of the corresponding side of the original figure(O)}}.

From the given picture, we have

D = 21 units and O = 27 units.

Therefore, the scale factor of dilation is given by

S=\dfrac{27}{21}=\dfrac{9}{7}.

Thus, the required scale factor is \dfrac{9}{7}.

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