Answer:
2x^3 - 3x^2 + 7x - 3
Step-by-step explanation:
Area = length * width
= (2x - 1)(x^2 - x + 3)
= 2x(x^2 - x + 3) - 1(x^2 - x + 3)
= 2x^3 - 2x^2 + 6x - x^2 + x - 3
= 2x^3 - 3x^2 + 7x - 3
Answer:
4/5
Step-by-step explanation:
5(y + 2) = 4(x - 3)
Divide each side by 5
5/5(y + 2) = 4/5(x - 3)
(y + 2) = 4/5(x - 3)
This is in point slope form
(y - y1) = m(x - x1)
The slope is 4/5
Basically, you are asking how many ways can 5 objects be chosen from 12 (the order is NOT important).
The formula for this is n! / [ r! * (n-r)! ]
12! / [5! * 7!] =
12*11*10*9*8*7! / (5! * 7!) =
12*11*10*9*8 / 5 * 4 * 3 * 2 =
11*9*8 =
792 different collections
Source:
http://www.1728.org/combinat.htm
