The right answer is that The graph of the quadratic function has a vertex at (0,5). It was my pleasure to help!!
The answer to this is 99.
You take all known values and subtract it from 360.
360-132-39-90=99.
Step-by-step explanation:
Let's say b is the rate of the boat in still water, and c is the rate of the current.
Distance = rate × time
Going upstream:
100 = (b − c) (5)
20 = b − c
Going downstream:
100 = (b + c) (2)
50 = b + c
Solve the system of equations using substitution or elimination. Using elimination, add the equations together:
70 = 2b
b = 35
c = 15
The boat's speed is 35 km/h, and the current's speed is 15 km/h.
Two plus ten times eight
(2+10)*8 = 96
x^2 = 81/100
Let's take the square root of each side
x = 0.9 and -0.9