(a) y = 3(x^2 -4x) +17 = 3(x^2 -4x +4) +17 -3*4
y = 3(x -2)^2 +5
The turning point at (2, 5) is a minimum.
(b) y = -5(x^2 -8x) -70 = -5(x^2 -8x +16) -70 +80
y = -5(x -4)^2 +10
The turning point at (4, 10) is a maximum.
3(41x+400) simplified = 123x+1200
The answer is diameter (A)
the long line down the middle is diameter and the short line that goes from the middle to the half end of the circle is radius
Answer:
Step-by-step explanation:
You are looking for car b speed.
Car A traveled the distance in 2 h, and Car B traveled the distance in 1.5 h. Car B traveled 15 mph faster than Car A.
Formula r×t=d
2(s-15) = 1.5s
2s - 30 = 1.5s
2s - 1.5s = 30
0.5s = 30
S= 30/0.5
s peed of car b = 60 mph