一艘轮船先向正东方向航行2小时，再向西北方向航行t小时。船的航速是每小时25千米。试用关于t的代数式表示船离出发地的距离；-八年级数学

更多内容推荐

• 计算+的结果为。-八年级数学
• 函数中自变量x的取值范围是（）A．x≤0B．x≤-2C．x≤2D．x≥-2-九年级数学
• 若二次根式在实数范围内有意义，则x的取值范围是．-九年级数学
• ---- Sorry, I am late. The bus was _________ in the traffic. ----- Oh, never mind. It doesn’t matter
• A friend is like a mirror. When you stand in front of a true friend, what is ____back to you?A．refle
• My train arrives in Beijing at eight o’clock tonight. The plane I would like to take from there ____
• 计算：=．-八年级数学
• 计算：2327+634=______．-数学
• 函数中，自变量的取值范围是-八年级数学
• In the summer, large crops of fruit may be_______ by freezing or bottling.A．reserved B．deserved C．se
• 若为非负实数，则关于的说法正确的是（）A．表示数的平方根B．比小C．一定是无理数D．在数轴上一定能找到表示数的点-八年级数学
• 下列命题中,错误的是()A．关于x的一元二次方程,必有两个互为相反数的实根;B．关于x的方程必有两实根；C．关于x的一元二次方程必有一根为零;D．关于x的方程可能没有实根.-九年级数学
• Many students apply for a position at that company, but only a few _____.A．are being acceptedB．are a
• --- Any news about the fire?--- Nearly 20 people ______ from the burning building by now.A．rescuedB．
• Whenever Steve sang in the shower, his voice _______ throughout the house.A．has rungB．would ringC．wa
• It is reported that the guy who is going to _________ the lecture spent a year living in the rain fo
• 计算的值为A．B．C．D．-八年级数学
• a与2a的和为（）A．3aB．5aC．3aD．5a-数学
• How did you ___ to paint the whole house in a week?A．tryB．manageC．winD．succeed-高一英语
• （每小题4分，共8分）（1）计算：；（2）解方程：(3x＋2)2－4＝0-九年级数学
• --- May I visit you at 10 o’clock tomorrow morning?--- I’m afraid I ______ a document for my boss th
• The salespeople said they hadn’t overcharged customers, but the police’s report showed that the prac
• At the moment of the car accident, Jason’s life _____ in the blink of an eye.A．changesB．had changedC
• ---The “No.1 Document” is designed to help the rural population increase their incomes.---I believe
• 计算-九年级数学
• ---Anna, you look so tired and wet all over!---Well, you know, all morning I _______ my books to my
• 使式子有意义的的取值范围是_______-九年级数学
• 下列结论正确的是A．B．C．D．-八年级数学
• By the time he arrives in Beijing, we ______ here for two days.A．will have stayedB．will be stayingC．
• --Can I call you back at two o’clock this afternoon? ---- I’m sorry , but then I ______ to Beijing .
• 观察下列各式：，，，，…，请你将猜想的规律用含自然数的代数式表示出来．-九年级数学
• The famous hospital _____ in 1911.A is built B was built C build D builds-高二英语
• 计算：18+8+27-48．-数学
• 计算：=.-九年级数学
• Unfortunately, when I dropped in, Dr. Green ______, so we only had time for a few words.A．just leftB
• 若和都有意义，则的值是A．B．C．D．-八年级数学
• ．-八年级数学
• 若2<x<3，则=_。-九年级数学
• Sun Yang, a young Chinese swimming talent, ___________several gold medals before 2012 London Olympic
• ―Our company will organize a trip to Hongkong next month. I ______ my mother there.―I’d rather you _
• 计算：+20120-九年级数学
• ---It was dangerous to throw that bottle out of the window. You could have hurt someone.---I’m so so
• 如果点P（）关于原点的对称点为（–2，3），则x+y=▲.-九年级数学
• Lin Tao _____ his uncle from the UK tomorrow.A will seeB sawC would seeD had seen-高二英语
• ．若为二次根式，则m的取值为A．m≤3B．m＜3C．m≥3D．m＞3-八年级数学
• If you stick to it, this plan ______ that your company is well prepared to deal with future challeng
• During her childhood Susan read a lot about Chinese history, from which she _________ greatly in her
• 下列计算中，正确的是[]A.|-2|=-2B.C.a3·a2=a5D.2x2-x=x-九年级数学
• 不用计算器计算：23(54+1227)-(24+43)．-数学
• 化简：=（）。-九年级数学