The midpoint of CD is M=(1, 2). One endpoint is C = (6, -2). Find the coordinates of the other endpoint, D.

Endpoint = (-4,6)

Step-by-step explanation:

To find any endpoint use the formula    

multiply each by 2  to simplify

    take the equations and simplify

6+ = 2                          -2+ = 4  =  

-6       -6                          +2       +2

    = -4                               =  6

To check use the Midpoint formula

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w