物C 密度 1，6 3，1／3 1 1平方厘米的铜质量为8，9克 53，4 克 0，06厘米 278 空心 10 188 4 热缩冷涨 高 50 4，1 2／3 小 151 6，375 V＝2kg/1000kg/m3=0.002m3 v=0.9*10'3kg/m3*0.002m3=1.8kgA B C ml 偏大 游码移到零刻度线处 平横螺母 横梁 右 89 14 大 不是 工艺品的体积大于铜块的体积 将酱油倒入空瓶 瓶子放在天平左盘 放入砝码调动游码使天平平横 P＝M／V0 酱油会留于瓶壁 量筒 59 30 偏大 1，8 是硫酸 水平 C 42 14 3 3000 偏大 洋芋的密度与生长地有关 品种 成熟度 1，06＊10’3 品种与密度有关
英danger mad protect kill peace hard snakes rare cousin to Browto drink interesting not to swim bigger surprisedin dnger take away at fact is think think about southwest research symbol cause ituation goes back feeling turtles nature reason mained make to lives tallest to save 不会for example difficltly pollutes provide on不会D A B G E 数 p41D y=1000 y=210(x-50)+1000 y=50,y=0.9x+45.5 y=0.9x+45.5212=0.9x+45.5
166.5=0.9x
x=185
185+50=235
y=40x y=27.5x+7.5
1620=27.5x+7.5
1612.5=27.x
x=58.63
挖59天
1kg伸长0.5cm
p42
x=-10 x=-10 (-10,0)
0=3/4x+3
-3=-3/4x
x=4
y=3/4x+3
y=-3/4*0+3
y=3
S=1/2*y*x
=1/2*3*4
=6
x+y=14
x=14-y
y=-3/4(14-y)+b
y=-10.5-0.75y+b
1.75y=-10.5+b
y=-6+b-3/4
x=-6x=8
y=6
S=1/2*8*6=24
英danger mad protect kill peace hard snakes rare cousin to Browto drink interesting not to swim bigger surprisedin dnger take away at fact is think think about southwest research symbol cause ituation goes back feeling turtles nature reason mained make to lives tallest to save 不会for example difficltly pollutes provide on不会D A B G E 数 p41D y=1000 y=210(x-50)+1000 y=50,y=0.9x+45.5 y=0.9x+45.5212=0.9x+45.5
166.5=0.9x
x=185
185+50=235
y=40x y=27.5x+7.5
1620=27.5x+7.5
1612.5=27.x
x=58.63
挖59天
1kg伸长0.5cm
p42
x=-10 x=-10 (-10,0)
0=3/4x+3
-3=-3/4x
x=4
y=3/4x+3
y=-3/4*0+3
y=3
S=1/2*y*x
=1/2*3*4
=6
x+y=14
x=14-y
y=-3/4(14-y)+b
y=-10.5-0.75y+b
1.75y=-10.5+b
y=-6+b-3/4
x=-6x=8
y=6
S=1/2*8*6=24
