Combinations = n! / (n - r)! r!

In this case:
n = 4
r = 3
Combinations = 4! /(4-3)! 3! = 24/(1)(6) = 24/6 = 4
Answer:
4 arrangements
Ok so I’m thinking that s = 93 because first I multiply first sides of the equation by -4, which was s-61=32. Then I moved the constant to the right hand side and change its sign which will be s=32+61. After I did all of that I added the numbers together and got 93..... therefore s=93
See explanations
Step-by-step explanation:
6. The fraction can be written as;

Divide 4 by 2
=
7.
The fraction can be written as;

introduce product sign as

8.
The fraction can be written as;

Introduce product sign

9.
The fraction can be written as;

10.
The fraction is simplified to;

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Simplifying complex fractions:brainly.com/question/12214941
Keywords: simplifying, complex, fractions
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Answer:
8.8 hours
Step-by-step explanation:
Happy paws cost equation
5.50h + 20
Wood watchers cost equation
6.75h + 9
Make the two equations equal
5.50h+20 = 6.75h+ 9
Collect the co-efficient of both sides.
6.75h- 5.50h= 20-9
1.25h= 11
Divide both sides by the coefficient of h
1.25h/1.25= 11/1.25
h= 8.8
Answer:
magnets
Step-by-step explanation:
counter
bottle cap
pushpin
microwave button