Answer:
D (-4, -9)
Step-by-step explanation:
midpoint formula:
(x₁ + x₂) / 2 , (y₁ + y₂) / 2
plug in C (2,7)
(2 + x₂) / 2 , (7 + y₂ ) / 2 = (-1, -1)
(2 + x₂) / 2 = -1
multiply each side by 2
2 + x₂ = -2
subtract 2 from both sides
x₂ = -4
(7 + y₂) / 2 = -1
7 + y₂ = -2
subtract 7 from both sides
y₂ = -9
66
5000 meters
1 km = 1000 m
5 km = 1000 × 5 = 5000 meters
Therefore there are 5000 meters in a 5 km race.
A = 24
B = 8
C = 6
4:3 from B:C
8:6
8 games won by B and 6 games won by C.
3:1 from A:B
24:8
24 by A and 8 by B
