Answer:
x=-1
Step-by-step explanation:
m=(y2-y1)/(x2-x1)=(6-3)/(-1-(-1)=3/(-1+1)=3/0
your slope is undefined.
x=-1
The first question is 50% because a total of 30 girls bought lunches out of 60 kids
the second question, the easiest way is to plug in the x and y coordinates
3(4) - 2(0) = 12
12-0=12
12=12
because 12 = 12 is true, the first pair is the answer
Answer:6/11
Step-by-step explanation:
It’s 3.4 because 3.4 times itself equals 11.56 which is the closest to 11.
Answer:
10 kph
Step-by-step explanation:
Find the speed of the current of the river.
20/(20 - c) + 180/(20 + c) = 8
20(20 + c) + 180(20 - c) = 8(400 - c^2)
8c^2 - 160c + 800 = 0
8(c^2 - 20c + 100) = 0
8(c - 10)^2 = 0
c = 10
The speed of the current of the river is 10 km/hour.
