5/9 (fraction simplified)
You can choose values of x and calculate , values of y
for example,
2y= x+1
y=(1/2)x +1/2
x=0, y=(1/2)*0 +1/2 = 1/2 point (0, 1/2)
x=3, y=(1/2)*3+1/2=3/2+1/2=4/2=2 point (3, 2)
and so on
It would be 13 1/8, because you would just multiply all of the numbers.
Answer:
first one with -1...21
Step-by-step explanation:
only one that follows quadratic formula format
Against the wind:
distance = 3400 km
time = 5 hr.
rate = d/t = 3400/5 = 680 km/hr
With the wind:
distance = 3400 km
time = 4 hr
rate = d/t = 3400/4 = 850 km/hr
Equations:
plane speed - wind speed = 680 km/hr
plane speed + wind speed = 850 km/hr
2(plane speed) = 1530
plane speed = 765 km/hr
Substitute and solve for "wind speed":
765 + wind speed = 850
wind speed = 85 km/hr
Did you follow?