11 8/7 +3 5/1 − ? = 15 PLZ I NEED IT FASTER THAN FAST
1 answer:
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Answer:
Step-by-step explanation:
≥ - 2
x - 4 ≥ - 6
x ≥ - 2
<em>x ∈ [ - 2 , ∞ )</em>
2 - 6x < 32
- 6x < 30
x > - 5
<em>x ∈ ( - 5 , ∞ )</em>
1) ,
,
(given)
2) is a right angle (perpendicular lines form right angles)
3) and
are right triangles (a triangle with a right angle is a right angle)
4) (HL)
5) (CPCTC)