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katovenus [111]
2 years ago
15

Under a dilation, the point (–3, –4) is moved to (–15, –20). What is the scale factor of the dilation?

Mathematics
2 answers:
katrin [286]2 years ago
7 0
The scale factor of the dilation is 5
umka2103 [35]2 years ago
4 0

i have done this the answer is 5 . 100% . God bless ya'll.

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HELP PLEASE!! THANK YOU!
dmitriy555 [2]

Answer: choice B, 40.5 degrees

The triangle is isosceles based on the fact that AC = BC (the tick marks are the same). The angles opposite the congruent sides are also congruent

angle A = angle B = x for some unknown number x

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2x+99 = 180

2x = 180-99

2x = 81

x = 81/2

x = 40.5

So angle A and angle B are both 40.5 degrees

Check:

A+B+C = 180

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180 = 180 answer is confirmed

==============================

Edit

The sides with the two tick marks are the same length, so 7x-4 is the same as length as 31

7x-4 = 31

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x = 35/7

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Answer is choice B) 5

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