Answer: P(X<6) = 0.3085 or 30.85%
Step-by-step explanation: Determine, first, z-score:
x is a random variable for time a student takes to find a spot, in this case, x=6:
z = -0.5
Using z-score table, find z-score:
P(X<6) = P(z< -0.5)
P(X<6) = 0.3085
<u>Probability of finding a parking spot in less than 6 minutes is approximately 30.85%.</u>
We know that the formula for calculating distance is:
distance d = velocity v * time t
Calculating for each interval:
1: 25 km/hr for 4 minutes
d1 = (25 km / 60 min) (4 min) = 1.67 km
2: 50 km/hr for 8 minutes
d2 = (50 km / 60 min) (8 min) = 6.67 km
3: 20 km/hr for 2 minutes
d2 = (20 km / 60 min) (2 min) = 0.67 km
The total distance covered is:
d = d1 + d2 + d3
d = 1.67 + 6.67 + 0.67
d = 9 km
The average speed is:
s = 9 km (1000 m / km) / (14 min * 60 s / min)
s = 10.72 m / s
B. cosine 25 degrees
because cosine = adjacent / hypotenuse
Answer:
i need more details of the question
Step-by-step explanation:
I think it is 72.2 percent because 9x5=45k and 45k-32.5k= 12.5k so 32.5 percent of 45 is 72.2 (rounded to the nearest tenth) btw I feel lonely