The mean age of 3 women in an office is 27 years old.
1 answer:
Answer:
mean age of women
(x+y+z)/3=27
mean age of men
(x1+x2+x3+x4+x5+x6)/6=34
mean age of all people in the office
x+y+z=27*3=81
x1+...x6=34*6=204
so
mean age( x+y+z+x1+x2+..x6)/(3+6)=(27*3+34*6)/9
=(81+204)/9=285/9=32 approximately
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A is your answer
plug in 8 into x and 2 into y
(8-2)^2 = 8^2 - 2(8)(2)+ 2^2
6^2 = 64 - 32 + 4
36 = 68 - 32
36 = 36 True
hope this helps
I'm not sure what the question is, here. Please make the question clear and I will answer, happily.
A) = 2
B) = -1
C) = -1
Explanation:
Answer:
B
they both have equal probability of winning as both of them have a 50/50 chance of winning
Step-by-step explanation:
1)20 hours and 2)30 hours
