Complete Question
The complete question is shown on the first uploaded image
Answer:
The score of the student is x = 779.42
Step-by-step explanation:
Generally we can mathematically represent the z-score as

Here x is the score of the student
substituting 1045.7 for the Mean, 221.9 for the stDev and -1.2 for z we have

=> 
=> x = -266.28 + 1045.7
=> x = 779.42
Answer:
8
Step-by-step explanation:
640/80=8
8*80=640
Answer:
x3 just multiply 2 x 3 and then multiply the 6 from that by 3 to get 18 and so on
Step-by-step explanation:
ez
There would be 160 people.
(.75)=(120)
(.25)=(40) (Divide by 3)
(1)=(160) (Multiply by 4)
Answer: -17y-16z
Step-by-step explanation: