80........................
Sometimes is the answer. The altitude of a triangle is a perpendicular bisector when the triangle is isosceles.
Here is the graph. A way you could graph this is notice how this equation is in point-slope form.
A line that passes through (x1, y1) and has slope m
y - y1 = m(x - x1)
Using the equation, you could find out that the line has a slope of -2/3 and passes through the point (-9,5).
Have an awesome day!
30 min = 30/60 hr = 0.5 hr
d = rt
100 = r*0.5
100/0.5 = r
200 = r
r = 200 mph.
We know that Rate = distance/time
(30 minutes is .5 hour)
Rate=100 mile/.5 hour
Divide and we get:
Rate=200 MPH
(Hint: MPH is Miles per Hour---Per means "for each")
Make sense?
Is that a question or answer?