高分悬赏！！！！！！

1. 高分悬赏！！！！！！

2. 求大神！！！30分悬赏！！

（1）各年现金净流量
第一年=-220-6-10=-236万元
第二年=-24+60=36万元
第三年=60+5=65万元
第四年=60+5*2=70万元
第五年=60+5*3=75万元
第六年=60+5*4+10+24=114万元
（2）回收期=3+（260-60-65-70）/75=3.87年
（3）净现值=-226-(24+10)/（1+10%）+60/（1+10%）^2+65/（1+10%）^3+70/（1+10%）^4+75/（1+10%）^5+114/（1+10%）^6=0.24万元

3. 急啊！！！！！悬赏分20分

1，若为自由故，二者皆可抛
2，安得广厦千万间，大庇天下寒士俱欢颜，风雨不动安如山。
3，粉身碎骨浑不怕，要留清白在人间
4，砍头不要紧，只要主义真，杀了夏明翰，自有后来人。
5，何时眼前突兀见此屋，吾庐独破受冻死亦足
6，人生自古谁无死，留取丹心照汗青

4. 15分悬赏问题！！！！！

1.
甲比乙多行15*2=30千米
行了30/（65-60）=6小时
ab距离（65+60）*6=750千米


2.
解：设甲原来有x千克。
(x+10)/2=(120-x)-10
   解得x=70
  120-70=50(千克）
答：甲原来有70千克，乙原来有50千克。

5. 急急急！！！！高分悬赏

y=ax平方+bx+c(a不等于0)的图像由抛物线y=-1/2x平方经过平移得到的，
那么a=-1/2

y=-1/2 x²+bx+c
经过点（0，1）和（-2，3）。
带入得到c=1
3=-1/2 *4-2b+c
-2-2b+c=3
解得：
b=-2
c=1
y=-1/2x²-2x+1

6. 高分悬赏！！！！

rt

7. 给100悬赏！急！！！！！

Peter was a little boy.His parents were very busy with their work,so he was usually very lonely.
One day,Peter sat in the garden playing alone,and he really wished that he could have a friend to play with.
Suddenly,Peter saw a purple-winged fairy sitting on a rose." " Hi!I am Peter.Who are you?" asked Peter." I am a fairy named Sara," said the fairy.
" Hi!Sara,would you like to be my friend and play with me?" asked Peter."Yes,I'd love to." Sara replied.
Sara then sat on Peter's knee and talked happily about her fairyland.
" There are many beautiful flowers in my homeland.I like to ride on the wind and play with the sky-horses," said Sara.
" Fantastic!" said Peter.
They became good friends.However,Sara needed to go home,so Peter was sad.
"Don't be sad,Peter,I'll pray for your happiness.And I'll come and visit you someday." said Sara.
" I'll miss you,Sara." said Peter.
Peter was glad that he had a fairy friend now.

8. 有悬赏！！！！！

长，120×100÷500=60厘米
宽，50×100÷500=10厘米