Answer:
hope this can help you (^^)
Answer:
10 years
Step-by-step explanation:
the average or mean value is the sum of all data points divided by the number of data points.
x = the unknown age of the 5th student.
average = 9 = (5 + 7 + 8 + 15 + x)/5
45 = 5 + 7 + 8 + 15 + x = 35 + x
x = 45 - 35 = 10
the 5th student is 10 years old.
Answer:
-4(5-x)
Step-by-step explanation:
Answer:
Sorry i don't know......!!!!!!!
Step-by-step explanation:





<em>⇨ Use the formula below</em>
<em />
<em>⇨ Substitute the parameters:</em>
<em />
<em />


Hope that helped