Answer:
2,-1
Step-by-step explanation:
2x^2 -2x -4 =0
Factor out a 2
2(x^2 -x-2) =0
What 2 number multiply to -2 and add to -1
-2*1 = -2
-2 +1 = -1
2(x-2) (x+1) =0
Using the zero product property
x-2 = 0 x+1 = 0
x-2+2=0+2 x+1-1=0-1
x=2 x=-1
Answer:
30 students they are including the students that are also planning to participate in other sports to.
Total of angles in 180 so:
46+90+8x+4=180
8x=40
x=5
Answer:
40 min
Step-by-step explanation:
Sea level is 0 meters. Time when Amir reaches sea level is intersection line and x-axis. It is 40 minutes.
Step-by-step explanation:
-3-24x-36>-111
-39-24x>-111
-24x>-111+39
-24x>-72 /x(-1)
24x<72
x<2.66
