density= mass/volume
mass= densiy x volume
mass= 6.3 g/mm^3 x 30mm^3= 189 g
Answer: n=37
Step-by-step explanation:
0.05n+0.10x2n=9.25
0.25n=9.25
n=9.25/0.25
n=37
Answer:
a=-6
2(3-a)=18
3-a=18/2
3-a=9
a=3-9
nooooooooooooooooooooo
