The point where the two diagonals meet is also the midpoint of both diagonals.
This means that AE = EC . Since we have the value for both segments, we have

Since AC = AE + EC, we have

Answer:
22.95
Step-by-step explanation:
Its blurry cant help sorry
Answer:
The lines are perpendicular
Step-by-step explanation:
we know that
If two lines are parallel, then their slopes are equal
If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)
we have
----> equation A
isolate the variable y
Divide by 7 both sides

The slope of the line A is 
----> equation B
isolate the variable y
Divide by 3 both sides

The slope of the line B is 
Compare the slope of both lines


so
----> the lines are not parallel
Find the product of the slopes
----> the lines are perpendicular
Answer:
441 miles
Step-by-step explanation:
1st find rate from the given
D = RT
315 = 5R
63 = R miles/hour so,
then find distance for 7 hours
D = RT
D = 63 * 7
D = 441