SAT两道数学题求解答!1.At time t=0,a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If th
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![SAT两道数学题求解答!1.At time t=0,a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If th](/uploads/image/z/3454117-61-7.jpg?t=SAT%E4%B8%A4%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%E6%B1%82%E8%A7%A3%E7%AD%94%211.At+time+t%3D0%2Ca+ball+was+thrown+upward+from+an+initial+height+of+6+feet.+Until+the+ball+hit+the+ground%2C+its+height%2C+in+feet%2C+after+t+seconds+was+given+by+the+function+h+above%2C+in+which+c+and+d+are+positive+constants.+If+th)
SAT两道数学题求解答!1.At time t=0,a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If th
SAT两道数学题求解答!
1.At time t=0,a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If the ball reached its maximum height of 106 feet at time t=2.5, what was the height, in feet, of the ball at time t=1?
答案是70
2.The Acme Plumbing Company will send a team of 3 plumbers to work on a certain job.The company has 4 experienced plumber and 2 trainees, how many different such teams are possible?
答案是24
哎呀傻了= =
方程:h(t)=c-(d-4t)^2
SAT两道数学题求解答!1.At time t=0,a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If th
第一题你没有把h那个方程写上来,题目中说上面给出了h的方程.
第二题就是个概率组合,怎么算都不是24啊.
如果是一个trainee带三个plumbers,就是8
如果是一个trainee带两个plumbers是12
如果不分plumbers和trainees,就是在6个人里面选3个,那就是20
h(t)方程式将t=0 h=6, t=2.6 h=106代进去解方程
不过估计你已经上了大学一年多了。。
看都看不懂
孩子,你这个第二题都打都打错了。你回去看看题。正解应该是24. C 4 1 * C 4 2=24