Answer:
middle brother = x
older brother = x+1
younger brother = x-1
x-1+x+x+1=129
3x+0=129
3x=129
x = 43(middle brother)
43-1 = 42(younger brother)
43+1 = 44(elder brother)
Check:
43-1+43+43+1=129
42+43+44=129
129=129
Answer:
(a) 1,902,231,808,400
(b) 84
(c) 20
Step-by-step explanation:
In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.
The formula to compute the combinations of k items from n is given by the formula:
(a)
Compute the number of ways to select 9 applicants from 100 as follows:
(b)
Compute the number of ways to select 6 people from 9 as follows:
(c)
Compute the number of ways to select top 3 candidates from 6 as follows:
Answer:
4x^2+289 or if you want it simplified its 2x+17
Step-by-step explanation:
2x+5+12= 2x+17
2x+17^2=4x^2+289