8 * 5.7 = 45.6
Hope this helps!!!!
Answer:
Now: 6 yr mean age
in 10 yrs? 16 yr mean age
in 20 yrs? 26 yr mean age
Why? Because regardless of the relationship between each sibling's age, your always adding the 10yrs to each individual, which you are then dividing out to determine the mean age. See proof below:
Including anita, there are 6 people. We'll define each age as an unknown variable. Assume we know nothing about the relationships between their ages
for example sake
anita's age = a
sister 1's age = b
sister 2's age = c
brother 1's age = d
brother 2's age = e
brother 3's age = f
Now:
mean age = (a + b + c + d + e + f)/(6 people) = 6 yrs
in 10 yrs:
mean age = ((a+10) + (b+10) + (c+10) + (d+10) + (e+10) + (f+10))/(6 people)
mean age = (a + b + c + d + e + f + 60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + (60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + 10
Notice the first term is the same expression of the mean age for "Now"
Thus, in 10 yrs:
mean age = 6 + 10 = 16 yrs
The same principle applies for "x" yrs from now, as long as we know what the mean age is "Now"
Answer:
0.3846 feets
Step-by-step explanation:
Given that :
Full length of rod = 5 feets
Number of equal length rod cut from full length rod = 13
Length of each rod cut :
Full length of rod / number of equal length rod cut
5 feets / 13
= 0.3846 feets
Answer:
c
Step-by-step explanation:
2(2x+3y)
as 4x+6y
hope this helps and makes sense
Cross multiply
(x-6)(x+3)=x²-6x+3x+18=x²-3x+18
(x+7)(x+5)=x²+7x+5x+35=x²+12x+35
that means the inequality is
x²-3x+18≥x²+12x+35 which simplifies to
<em>—17≥15x or 15x+17≤0</em>
