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.
Answer:
x=19
Step-by-step explanation:
5(x+35)=9(300
5x+175=270
5x=270-175
5x=95
95/5=19X
Answer:
Step-by-step explanation:
B.28.1
Answer:
Cube=150cm^2
Triangular Prism=228ft^2
Step-by-step explanation:
Cube

Triangular prism
Using these formulas

Solving for A

Answer:
the 30% off is better because 30% of 55 is 16.5 and the coupon is for 15 so the 30% off is better.
Step-by-step explanation: