Answer:
simplify x=0 is the correct answer
Total = 7 slices.
1student = 7/9 of a slice.
Total number of students:


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Answer: She will be able to hand out to 9 students.---------------------------------------------------------------------------
Answer:
well if you're looking for angles then
angle ADB = 30°
angle CBD = 80°
angle CDB = 120°
but they asked to classify triangle ADC ,whose measurements are 90° , 40° and 50° ...so of they're asking what type of triangle then it is a right angled triangle.