-64+k²=0 4z²+k²=0
3u²-2=5u
-W+6w+72=0
-h-4h+5=0
2v²+5v=7
12²+1=-7x
5n²-3n=2
-y²+8y=0
using quadratic formula?​

What is the value of 1/3x + 7x when x = 5

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these