garacey241

19.04.2021 • 

Mathematics

Which statement describes why the two circles are similar? A translation (x,y)→(x+5,y) makes the circles concentric and then a dilation by a scale factor of 2 maps circle M onto
circle N.

A translation (x,y)→(x+5,y) makes the circles concentric and then a dilation by a scale factor of 0.5 maps circle M onto
circle N.

A translation (x,y)→(x+2,y) makes the circles concentric and then a dilation by a scale factor of 2 maps circle M onto
circle N.

A translation (x,y)→(x+2,y) makes the circles concentric and then a dilation by a scale factor of 0.5 maps circle M onto
circle N.

Ответ:

mia12340

20.11.2022

Mathematics

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Suppose J, K, L, M, N are points on the same line.

MK = MN + (-KN) = MN - KN = 9x - 11 - x - 3 = 8x - 14

Since LK = MK and LK = 7x - 10, then

7x - 10 = 8x - 14

8x - 7x = -10 + 14

x = 4

LJ = MK + KJ

MK = LK = 7x - 10 = 7(4) - 10 = 28 - 10 = 18

LJ = 18 + 28 = 46

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