What is the value of X?

x = 60

Step-by-step explanation:

<DGC = 90 degrees            Given

<AGB = <DGC                       Vertically opposite angles.

<AGB = 90 degrees.            <AGB takes on the properties of <DGB

30 + x + 90 = 180                 The three angles make up a line.

120 + x = 180                         Combine like terms..

x = 180 - 120                          Subtract 120 from both sides

x = 60

step-by-step explanation:

the shape,the size and the distance

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,