Answer:
a+b
Step-by-step explanation:
=1a+1b
=1(a+b)
=a+b
We must find UNIQUE combinations because choosing a,b,c,d... is the same as d,c,b,a...etc. For this type of problem you use the "n choose k" formula...
n!/(k!(n-k)!), n=total number of choices available, k=number of choices made..
In this case:
20!/(10!(20-10)!)
20!/(10!*10!)
184756
Answer:
square root of 5 squared minus 4 squared
Step-by-step explanation:
a^2 + b^2 = c^2
c^2 - b^2 = a^2
5^2 - 4^2 = a^2
25 - 16 = a^2
9 = a^2
√
√9=a
a=3
or
a= √25-16
a= √9
a=3
Hope this helps!
Answer:
y = a/x
Step-by-step explanation:
a = xy
divide both sides by x:-
y = a/x
Answer:
AP = 14
Step-by-step explanation:
The centroid divides each median into segments in the ratio 2:1. AP is 2/3 of AE, so is ...
AP = (2/3)(21)
AP = 14