Complete the coordinate proof of the theorem.

given: abcd is a parallelogram.

prove: the diagonals of abcd bisect each other.

parallelogram in quadrant 1 of the coordinate plane with vertices at a begin ordered pair 0 comma 0 end ordered pair, b begin ordered pair a comma 0 end ordered pair, c begin ordered pair a plus c comma b end ordered pair and d.

enter your answers in the boxes.
the coordinates of parallelogram abcd are a(0, 0) , b(a, 0) , c(a+c, b) , and d(
,
).

the coordinates of the midpoint of ac are ( a+c2 ,
).

the coordinates of the midpoint of bd are (
, b2 ).

the midpoints of the diagonals have the same coordinates.

therefore, the diagonals of abcd bisect each other.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true