作业帮y4
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/17 00:05:17
上周六你们班在老师的带领下去参观博物馆，请介绍过程和感受，不少于60字 出发时间（8：30am） 交通方式（bus） 路上所有时间（about twenty minutes） 活动内容（see old thing,listen to guide,watch videos） 返回时间及感受（5:00pm.,tired,happy and excited）
解题思路： 根据提示运用一般过去时态完成此文。
解题过程：
Last Saturday , our classmates and I visited the museum with our teacher . The museum is about 2 kilometers away from our school ,So we went there by bus .We set off at 8:30am.It took us about twenty minutes to get there .At the museum we saw many old things and listened to the guide.We watched videos. We learned a lot .At 5:00pm, we left the museum for school . Although we were very tired ,we felt very happy and excited.
最终答案：略
解题过程：
Last Saturday , our classmates and I visited the museum with our teacher . The museum is about 2 kilometers away from our school ,So we went there by bus .We set off at 8:30am.It took us about twenty minutes to get there .At the museum we saw many old things and listened to the guide.We watched videos. We learned a lot .At 5:00pm, we left the museum for school . Although we were very tired ,we felt very happy and excited.
最终答案：略
y4(选择)
-16x4+81y4
已知x3−y4
已知x3＝y4＝z5
因式分解：x4次方-2x²y²+y4次方
分解因式：16x4-72x2y2+81y4．
题目求y1,y2,y3,y4的平均数与方差.
y平方+3y-1=0求（y8次方-3y4次方+1）/y4次方
设a≠b,且数列a,x1,x2,b和a,y1,y2,y3,y4,b分别是等差数列,求x2-x1/y4-y1
设a≠b,且数列a,x1,x2,b和a,y1,y2,y3,y4,b分别是等差数列,则y4-y3/x2-x1
数据x1,x2,x3,x4,x5与数据y1,y2,y3,y4,y5满足x1+y1=x2+y2=x3+y3=x4+y4=X
（x1＋x2＋X3＋x4）/（y1＋y2＋y3＋y4）用什么公式和x1/y1,x2/y2,x3/y3,x4/y4