xbeatdroperzx
12.12.2021 •
Mathematics
Decide whether the triangles are similar. If so, determine the appropriate expression to solve for x.
( look at image )
A: The triangles are not similar; no expression for x can be found.
B: ΔABC ~ ΔDEF; x equals r times w over u
C: ΔABC ~ ΔEFD; x equals r times w over u
D: ΔABC ~ ΔEFD; x equals r times w over z
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Ответ:
D. -5
Step-by-step explanation:
The compound fraction is easily simplified because both numerator and denominator have 5 in their denominator. Hence the ratio is the ratio of the numerators.
When an odd number of minus signs is involved in multiplication or division, the result is negative.