Answer:
Step-by-step explanation:
-7z - 7 ≤ -5z + 5
- 7 - 5 ≤ -5z + 7z
-12 ≤ 2z
-12/2 ≤ z
-6 ≤ z or z>= -6
2(7÷10)×1÷3+4÷15=1.4×0.33+0.267
=0.462+0.267
=0.729(0.73)
Answer:
Step-by-step explanation:
3x + y + 72 = 180
3x + y = 108 .... <em>(1)</em>
2x + y = 90 ..... <em>(2)</em>
(1) - (2)
<em>x = 18°</em>
<em>y = 54°</em>