Formula for combinations:
(n!)/(r!(n-r)!)
For you, this is:
10!/(5!(10-5)!) = 10!/5!5! = (10•9•8•7•6•5•4•3•2)/(5•4•3•2)(5•4•3•2) = (10•9•8•7•6)/(5•4•3•2) = 30240/120=252 different ways.
Answer:
12!!!!!!!!!!!!!!!!!!!!!!!
10186.28
And that’s how you do it
Answer:
The width would be 10 inches.
Step-by-step explanation:
To find this, start by labeling the width of the rectangle as x. Now we can express the length as 3x - 5. Now use the perimeter formula and the known perimeter to find x (which is the width).
2l + 2w = P
2(3x - 5) + 2x = 70
6x - 10 + 2x = 70
8x - 10 = 70
8x - 80
x = 10