Answer:
The answer is d you picked the right one
Step-by-step explanation:
Answer:
10 kilos
Step-by-step explanation:
5.7 is mass of copper by 49%
X=first number
2x= second side
3.5x= third side
X+2x+3.5x=65
6.5 x= 65
Divide both sides by 6.5
X=10. First side
2x= 20. Second side
3.5x= 35 = third side
10, 20, 35
Answer:
50
Step-by-step explanation:
All angles around a circle is 360°
/_ 2 = 130°
/_ 1 = 130° (Vertically opposite angles)
= 130° + 130° = 260°
all angles = 360°
= 360° - 260° = 100°
= 100° ÷ 2
= 50°
= /_ 3 and /_ 4 = 50°
Verification = 130° + 130° + 50° + 50° = 360°