D. The set of all points in a plane that are equidistant from a fixed point.
You need to expand the brackets before you can simplify, so:
-3 × 10x = -30x
-3 × 4y = -12y
6 × 6x = 36x
6 × -2y = -12y
So now you have (-30x - 12y) + (36x - 12y)
-30x + 36x = 6x
-12y + -12y = -24y
So your answer is 6x - 24y. I hope this helps!
Answer:
give me a min
Step-by-step explanation:
Answer:
Given,
The total distance =
km,
Time =
hours,
Since,

Thus, the speed of the group of hikers = 

= 3 km per hour,
Now, Distance = speed × time
Let y be the distance( in km ) covered in x hours
⇒ y = 3x
If x = 

If x = 2

If x =3

If x = 4

Hence, the required points in the coordinate plane are, ( shown in the below diagram )
(3/4, 9/4), (2, 6), (3, 9) and (4, 12)
Area = 1/2 bh
45= 1/2 b 10
45= 5b
Divide by 5
9=b
b=9