If x is the average (arithmetic mean) of m and 9, y is the average of 2m and 15, and z is the average of 3m and 18, what is the average of x, y, and z in terms of m?
A) m+6
B) m+7
C) 2m+14
D) 3m+21
?ans..in explaination Romeoharshit ise krke dikha??
Answers
Answered by
3
ruk ja bhai
Since the average (arithmetic mean) of two numbers is equal to the sum of the two numbers divided by 2, the equations x=
m+9
2
, y=
2m+15
2
, z=
3m+18
2
are true. The average of x, y, and z is given by
x+y+z
3
. Substituting the expressions in m for each variable (x, y, z) gives
[
m+9
2
+
2m+15
2
+
3m+18
2
]
3
This fraction can be simplified to m+7.
The final answer is B.
bhai dekh le shai h kya
Since the average (arithmetic mean) of two numbers is equal to the sum of the two numbers divided by 2, the equations x=
m+9
2
, y=
2m+15
2
, z=
3m+18
2
are true. The average of x, y, and z is given by
x+y+z
3
. Substituting the expressions in m for each variable (x, y, z) gives
[
m+9
2
+
2m+15
2
+
3m+18
2
]
3
This fraction can be simplified to m+7.
The final answer is B.
bhai dekh le shai h kya
Answered by
6
Harshit yrr tu maths me kya krta h iska bhii dediya wha...!!!!maan gye
Similar questions