Answer:
Step-by-step explanation:
This is a permutation problem. There are 5 swimmers in the race, and any combination of 3 will finish in the first 3 places. The formula will look like this:
₅P₃ = 
which will expand to
₅P₃ = 
and when the 2 * 1 cancels out between the numerator and the denominator, you're left with simply:
₅P₃ = 5 * 4 * 3
which is 60
Answer:
I don't believe so
Step-by-step explanation:
generally for fractions, you can start by simplifying
to simplify divide the numerator and denominator by a common factor
in this case, there is no common factor, so this either your answer or you can divide 729 by 4096 to get a decimal number (0.118)
Answer:
Step-by-step explanation:
(3)
U=180-123=57
69+57+?=180
?=54
(5)
B=180-143=37
49+37+?=180
?=94
Answer:
The perimeter of a triangle is the sum of all its three sides.
So,
0.75+0.75+0.75 = 2.25inches
Suppose Alex has 3x stamps, Freddy has 5x stamps. After Freddy gives Alex 10 stamps, Alex has 3x+10 while Freddy has 5x-10
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
