If y varies inversely as the square of x, and y = 4 when x = 2, then what is the value of y when x= 3? ( ) A. (16)9 B. 83 C. 3 D. 9 相关知识点: 试题来源: 解析 A y and x^2 must have a constant product of 4* 2^2= 16. Therefore, y= (16)9....
百度试题 结果1 题目 Ify varies inversely asx, andx=50 wheny=2.7, what is the value ofy (to the nearest tenth) whenx=80?A:0.2B:1.7C:3.4D:4.3 相关知识点: 试题来源: 解析 B None 反馈 收藏
【题目】It is given that y varies inversely as vx Whenx=144.,y=81.已知y随√x反变.当x=144时,y=81.(1)Express y in terms of x.以x表y.(2)If the valueof x is increased from 144 to 324,find the change in the value of y.若x的值由144增加至324,求y的值的改变. ...
1It is given that y partly varies directly as x2 and partly varies inversely as x. When x=1, y=−4 and when x=2, y=5. When x=−2, y=( ).巳知y的一部分随x2正变,而另一部分随x反变. 当x=1时,y=−4;又当x=2时,y=5.当x=−2时,y=( ).A.−11.B.−5.C.5...
百度试题 结果1 题目Ifx varies inversely asy, andx=4 wheny=8, findx wheny=1. 相关知识点: 试题来源: 解析 32 32 反馈 收藏
It is given that y partly varies directly as x2 and partly varies inversely as x. When x=1, y=−4 and when x=2, y=5. When x=−2, y=( ). 巳知y的一部分随x2正变,而另一部分随x反变. 当x=1时,y=−4;又当x=2时,y=5.当x=−2时,y=( ). A.−11. B.−5. ...
If a and b vary inversely to each other, then find the values of x, y, z. View Solution If x varies inversely as y and x = 4 when y = 6, then when x = 3 the value of y is ___. View Solution It is given that x varies directly with y2 and x=3 when y=3. Find t...
【题目】It is given that y partly varies directly as x2 and partly varies inversely as r. When x=1, y=-4 and when x=2, y=5. When x=-2,y=().已知y的一部分随 x^2 正变,而另一部分随反变当x=1时,y=-4;又当x=2时,y=5.当x=-2时,y=().A.-11.B.-5.C.5.D.11. ...
It is given that y varies inversely as √x When x=144.,y=81.已知y随√x反变.当x=144时,y=81.
如果y 作为x平方的反比变化，那么当x是y的两倍时 a 乘以 b 除以 c 增加了 d 减少了 e 没有改变 不是学数学的，只是按照问题翻译，不知道答案 我是老师，有问题可以交流~