Answer:
-1
Step-by-step explanation:
Given: Mean= 25 minutes.
Standard deviation= 2 minutes
x= 23 minutes.
Lets find the z-score for the number of sandwiches delivered in less than 23 mins.
Formula: Z-score= 
Z-score= 
⇒ Z-score= 
∴ Z-score will be -1
Hence, -1 is the z-score for the number of sandwiches delivered in less than 23 minutes.
8 X
----- = ------
20 40000
40000/20=2000
2000*8=16000
X=16000
Answer:
6
Step-by-step explanation:
slope formula y=mx+b
m=slope
b=y-intercept
Answer:
1. at 1 hour, 3 miles is the distance.
2. at 0 hours, 0 miles is the distance.
3. at 3 hours, 9 miles is the distance.
Answer:
3. (3,-4)
Step-by-step explanation: