The answer is (4,5) Mark me brainliest!!!!!
Answer: 0.9
Step-by-step explanation:
<u>Let x be the number</u>
<u>Determine the value of the number</u>
x² = 81
√x² = √81
x = 9
<u>Find the 10% of the number</u>
Final number = rate of percentage × original number
Final number = 10% × 9
Final number = 
Hope this helps!! :)
Please let me know if you have any questions
Answer:
Mean: 30 students
Standard deviation: 5.2 students
Step-by-step explanation:
Khan