Answer:
Step-by-step explanation:
Bus One
speed = x
t = 7 hours
d = ?
Bus two
speed = x + 11
time = 7 hours
d1 = 1015 miles - d
Equations
d = s * t
Bus 1 + bus 2 = 1015
Solution
x * 7 + (x + 11)*7 = 1015
7x + 7x + 11*7 = 1015
14x + 77 =1015
14x + 77 - 77 = 1015 - 77
14x = 938
14x/14 = 938/14
x = 67 miles / hour
x + 11 = 78 miles / hour
Huh? I dont get it can you explain
You should really edit that to were there r diagrams
Answer:
The vertex of the quadratic equation is the point (4,2)
Step-by-step explanation:
we know that
The figure show a vertical parabola open downward
The vertex represent the maximum point of the graph
Looking at the graph
The maximum point of the graph is (4,2)
therefore
The vertex of the quadratic equation is the point (4,2)
see the attached figure to better understand the problem