Answer:

Step-by-step explanation:
<u>Parallelogram</u>
It's a quadrilateral formed by two pairs of parallel sides. The opposite sides have equal lengths.
We are given a parallelogram with opposite sides of 3x+1 and 6x-4. They must be equal, thus:
6x - 4 = 3x + 1
Subtracting 3x:
3x - 4 = 1
Adding 4:
3x = 5
Dividing by 3:

Answer:
Black line = Circumference
Red line = Diameter
Green Line = Radius
Step-by-step explanation:
Circumference is the length around the circle. The diameter is the length from one end of the circle to another. Radius is half the diameter, or a line from the circle that goes directly to the middle of the circle.
-5y=9x +2x -2x
-5y=9x
X= -5y/9
They won't arrive exactly when the race starts, but they will arrive before the race starts because, assuming they leave exactly three hours before the race, they can drive a total of 150 miles in three hours (3h*50mi/h). Because they only need to drive 120 miles, they will make it to the race before it starts.