Answer:
Total laps = 10d
Step-by-step explanation:
Let c = Carl's laps
d = Daria's laps
e = Erin's laps
c = 3d
c = e/2
c + d + e = totals laps
We can insert 3d in place of c in the third equation
3d + d + e = total laps
Also, e/2 equals 3d
e/2 = 3d
Multiply both sides by 2
(e/2 = 3d)2
e = 6d
Insert the new e
3d + d + 6d = 10d = totals laps
Answer:
3
Step-by-step explanation:
its so easy all you have to do is 12-9=3
2)
3) Opposite sides of a parallelogram are congruent.
4)
Answer:
the answer is weenie I THINK i coudl be wrong tho
Step-by-step explanation:
:)
Answer:
10, 12, 14
Step-by-step explanation: