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3 years ago

Help pleaseee

Mathematics

2 answers:

DIA [1.3K]3 years ago

8 0

Answer: The scale factor was used in the dilation = -4

Step-by-step explanation:

The scale factor of dilation is the ratio of the side-length in the image to the corresponding side length in the pre-image.

From the given picture, the length of side SR in pre-image = 3cm

The length of corresponding side S'R' in image = 12 cm

Then , the scale factor of dilation will be :-

$k=\dfrac{12}{3}=4$

Since , the enlargement appearing on the other side , then the scale factor becomes negative.

Hence, the scale factor of this dilation =-4.

lidiya [134]3 years ago

7 0

△Q′R′S′ is the image of △QRS under a dilation through point C.

What scale factor was used in the dilation

-4

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Step-by-step explanation:

the triangle containing x is an isosceles triangle so two of the sides are 55.

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2 years ago

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laila [671]

Answer:

1) A = 547.1136, C = 82.896

2) A = 678.5226, C = 92.316

3) A = 844.5344, C = 102.992

4) A = 1554.49625, C = 139.73

5) A = 1561.4906, C = 140.044

6) A = 994.8776, C = 111.784

Step-by-step explanation:

$A = \Pi (\frac{D}{2})^2 = 3.14 * (\frac{26.4}{2})^2 = 3.14 * 13.2^2 = 547.1136$

$C = \Pi D = 3.14 * 26.4 = 82.896$

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$C = 2\Pi r = 14.7*2 * 3.14 = 92.316$

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$C = \Pi D = 3.14 * 32.8 = 102.992$

$A = \Pi (\frac{D}{2})^2 = 3.14 * (\frac{44.5}{2})^2 = 3.14 * 22.25^2 = 1554.49625$

$C = \Pi D = 44.5*3.14 = 139.73$

$A = \Pi r^2 = 3.14*22.3^2 = 1561.4906$

$C = 2\Pi r = 2 * 3.14 * 22.3 = 140.044$

$A = \Pi r^2 = 3.14 * 17.8^2 = 994.8776$

$C = 2\Pi r = 2 * 3.14 * 17.8 = 111.784$

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2 years ago