What is the midpoint between （12,5) and （10, -7)？

the value of AB/AC？

A．3/4

B．2/3

C．1/2

D．1/3

E．1/4

In the standard (x,y) coordinate plane, the midpoint of AB is (4,–3) and A is located at (1,–5). If (x,y) are thecoordinates of B, what is the value of x+y？

A.19

B.8

C.6

D.-1.5

E.-3

The coordinates of the endpoints of CD, in the standard (x,y) coordinate plane, are (-4,-2) and (14,2).What is the x-coordinate of the midpoint of CD？

A.0

B.2

C.5

D.9

E.10

In the standard (x,y) coordinate plane, point M with coordinates (5,4) is the midpoint of AB, and B has coordinates (7,3). What are the coordinates of A ？

A.(17,11)

B.(9, 2)

C.(6, 3.5)

D.(3, 5)

E.(3, 5)

the other end. The force F is now removed and another force F’ is applied at the midpoint of the rod. If F’ is at an angle of 30° with respect to the rod, what is its magnitude if the resulting torque is the same as when F was applied？

A、F

B、2F

C、3F

D、4F

E、5F

F、6F

G、7F

In the standard (x,y) coordinate plane, a line segment has its endpoints at (3,6)and(9,4). What are the coor-dinates of the midpoint of the line segment？

A.(3,-1)

B.(3,1)

C.(6,2)

D.(6,5)

E.(12,10)

Small Town. If Small Town Cablevision raises its price to $40 per month, the number of subscribers will fall to 20,000. Suppose that a price of $30 per month, there are 30,000 subscribers to cable television in Small Town. If Small Town Cablevision raises its price to $40 per month, the number of subscribers will fall to 20,000. Using the midpoint method for calculating the elasticity, what is the price elasticity of demand for cable television in Small Town？

A．0．66

B．0．75

C．1．0

D．1．4

E．2．0

A．“ I think I can be offered with high salary because I have confidence in mysel

F．”

B．I have got a pretty good idea of the range by looking through similar job postings, recruitment firm salary guides or websites like Glassdoor and find other jobs are higher paid than your company． ”

C．“ Based on my research, comparable positions with candidates with a similar background to mine are paying between ＄50,000 to＄60,000, so I would like to be paid in the midpoint of that rang

E．”

D．“ Based on my research, comparable positions with candidates with a similar background to mine are paying between ＄50,000 to＄60,000, so I would like to be paid with the higheset amount． ”

A．“ I think I can be offered with high salary because I have confidence in mysel

F．”

B．I have got a pretty good idea of the range by looking through similar job postings, recruitment firm salary guides or websites like Glassdoor and find other jobs are higher paid than your company． ”

C．“ Based on my research, comparable positions with candidates with a similar background to mine are paying between ＄50,000 to＄60,000, so I would like to be paid in the midpoint of that rang

E．”

D．“ Based on my research, comparable positions with candidates with a similar background to mine are paying between ＄50,000 to＄60,000, so I would like to be paid with the higheset amount． ”

A.坐标

B.顶点

C.端点

D.中点