Miana17 Miana17

21-02-2017
Mathematics

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Triangle STU has reflected over line m to form Triangle S'T'U'. What is the value of y?

A. 2
B. 6
C. 3
D. 5

Triangle STU has reflected over line m to form Triangle STU What is the value of y A 2 B 6C 3D 5 class=

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sqdancefan sqdancefan

28-07-2019

Answer:

D. 5

Step-by-step explanation:

The congruence of S'T' with ST tells you ...

9 = x +7

2 = x

The congruence of S'U' and SU tells you ...

4x = y +3

4·2 -3 = y = 5 . . . . substitute the value of x; subtract 3

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