Answer:
Step-by-step explanation:
12) x is greater than -15
14/15) you would add four to both sides
16) Closed dot on 7 and everything less than that is X
10) A
Answer:
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Step-by-step explanation:
If a quadrilateral is a rhombus then:
i) all its sides have equal length,
and
ii) the 2 diagonals are perpendicular and bisect each other.
The 2 diagonals of rhombus JKLM intersect at N.
Then m(MNJ)=90°, |JN|=4 and |NM|=3 units
thus, by the Pythagorean theorem,

The perimeter of the rhombus is 4*5 units=20 units.
Answer: 20 units