Answer:

Step-by-step explanation:
The deceleration experimented by the car is the product of kinetic coefficient of friction and gravitational constant:



The initial speed is computed from the following kinematic expression:





A 5,7,11
B 3
C 17,31
D 61,2
Might be wrong
Answer:
x=71
Step-by-step explanation:
38+x+x=180
x+x=142
2x=142
x=71