alisharodriguez1
27.06.2019 •
Mathematics
Atutor with a group of students. the tutor charges $40 plus $30 for each student in the group. today the tutor has s students and charges a total of $220
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Ответ:
Is 3 Students.
Step-by-step explanation: 30+40=70 220/70=3.
So 3 students are in the group.
Ответ:
The value of x=34 will make parallelogram ABCD a rhombus.
Step-by-step explanation:
Given a parallelogram ABCD where AC and BD are diagonal intersecting at E such that ∠AEB=(3x-12)°(1)
To make it rhombus ∠AEB should be 90° (∵ diagonals of rhombus are perpendicular bisector of each other)
Substitute ∠AEB =90° in (1) we get
(3x-12)°=90°
⇒3x-12=90
⇒3x=90+12[adding 12 on both sides]
⇒3x=102
Dividing 3 from both sides, we get
⇒x=34
Therefore ,the value of x =34 will make parallelogram ABCD a rhombus.
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