What is the simplified expression for 3 to the power of negative 4 multiplied by 2 to the power of 3 multiplied by 3 to the powe
r of 2 whole over 2 to the power of 4 multiplied by 3 to the power of negative 3?
A. 3 over 2
B. 3 to the power of 2 over 2 to the power of 2
C. 3 to the power of 2 over 2
D. 2 to the power of 4 over 3
Can somebody explain how to do this?
A. 3 over 2
B. 3 to the power of 2 over 2 to the power of 2
C. 3 to the power of 2 over 2
D. 2 to the power of 4 over 3
Can somebody explain how to do this?
1 answer:
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Answer:
- Elanor's standardized score is 1.19
- Gerald's standardized score is 0.72
- Elanor has higher score
Step-by-step explanation:
To compare Elanor's and Gerald's math scores, we need to standardize them and calculate their z-scores.
z score can be calculated using the formula
z= where
- X is the student's score
- M is the mean score of the exam
- s is the standard deviation of the exam
Elanor's standardized score is:
z(e) = ≈ 1.19
Gerald's standardized score is:
z(g)= ≈ 0.72
Since z(e) > z(g), Elanor has higher score