Answer:
the 3 one is the correct answer
Step-by-step explanation:
Answer:
9x4+126x3+648x2+1440x+1152
Step by step:
27(x^2+8x+16) / 3 (x^2+6x+8)
(27(x^2+8x+16) / 3) (x^2+6x+8)
(27(x^2+8x+16) / 3) (x^2) +(27(x2+8x+16) / 3) (6x)+(27(x2+8x+16)/3) (8)
9x4+72x^3+144x^2+54x^3+432x^2+864x+72x^2+576x+1152
9x4+126x3+648x2+1440x+1152
Answer:
26 years
Step-by-step explanation:
Given:
The mean age of 9 women = 27 years old
The mean age of 7 men = 25 years old
Question asked:
What is the mean age (nearest year) of all the people in the office?
solution:
By using, mean = sum of observations divided by number of entities
The mean age of 9 women = 27 years old
=
The mean age of 7 men = 25 years old
=
Total sum of ages of men and women in the office = 243 + 175
= 418 years
Total number of people in the office = 9 women + 7 men = 16
The mean age of all the people in the office = Total sum of ages of men and women in the office divided by Total number of people in the office
=
Therefore, the mean age (nearest year) of all the people in the office = 26 years
Answer:
-40 i think
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
4 x 5 = 20
= 10