Answer: -1.33 .
Step-by-step explanation:
Formula to find the Z-score :

Given: Mean = 191 and Standard deviation = 21
Then , the z-score corresponding to the expected value of 163 will be :

Hence, the z score corresponding to selling 163 inhalers is -1.33 .
Answer:
D
Step-by-step explanation
I'd say it's PQR and TSR cause they match up in terms of the order of vertexes, and then you've got the angles of P and T that are in the middle of PR and TR, which are equal, and the sides PQ and TS. The angles are in between the sides.
Answer
Step-by-step explanation:
i need the form of opperations what are you doing? standard form algerbraic roots with mixed fractions?
Answer: a
Step-by-step explanation:
44 times 3 =$132 for vases
x it is flowers, the price of one flower is $2
2x +132 must be less or equal 308