Answer:
21x^2 - 23x - 20 = 0
Step-by-step explanation:
The y coord becomes the negative x coord and the x coord becomes the y coord. So (-3,7) becomes (-7,-3).
Answer:
16 km is the answer
Step-by-step explanation:
a (Colton to parents' house) = 12 km
b = ?
c (parents' house to grandparents' house) = 20 km
According to the Pythagoras theorem,
a² + b² = c²
12² + b² = 20²
144 + b² = 400
b² = 400 - 144
b² = 256
b = 16
∴ Colton is 16 km away from his grandparents' house.
Answer:
4m
Step-by-step explanation:
It would be 4m as there are four different copies and the variable being used originally is 'm'. Therefore, we can move it around and since multilication is d addtiion, we would correct this to 4m.
Answer:
x=
3
2
=0.667
x=3
Step-by-step explanation: