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:
The hippopotamus weighs 6,993 pounds more than the monkey.
Step-by-step explanation:
7,000 x 1/1000 = 7,000/1,000 = 7
7,000 - 7 = 6,993
It would be I think it would be social science
True because tan(20)=2.1 and cot(20)=is o.44
Wow. That is a nice tuition.
The question is asking, how much money does he need to pay after taking consideration of the grant money and scholarship.
We need to add up the estimated costs for his first year. 1,600+400+1,400=3,400.
Subtract both 1,900 and 1,000 (2,900) because he does not need to pay that amount from the original estimated costs.
3,400-2,900=500
This means that aside from the financial aid help, he will need to pay an additional 500 dollars to pay for his first year of college.
