Answer:
2xy/10
Step-by-step explanation:
Answer:
Step-by-step explanation:
22c3
![22C3=\frac{22*21*20}{3*2*1} =1540 ~ways](https://tex.z-dn.net/?f=22C3%3D%5Cfrac%7B22%2A21%2A20%7D%7B3%2A2%2A1%7D%20%3D1540%20~ways)
10 ft and 2 because I did the math
Its A (1st one)
"<span>The interior angles of both a regular and irregular pentagon have a sum of 540o. "
</span>Regardless of it's shape if it's a polygon with 5 sides (whether is it regular or not) the interior angles with have the sum of 540 degrees.
1.
Let N be the number of coins of Alex
2a+1=N
3b+1=N
4c+1=N
5d+1=N
6e+1=N
7f+1=N
so N-1 is a multiple of 2, of 3, of 4, of 5, of 6 and of 7
so N-1 has factors 7*6*5*2*X, where X is another factor.
2.
There is no need to write N-1 as 7*6*5*3*2*4, since being a multiple of 6, means being a multiple of 2, and of 3 as well. Also, no need to write *4, since 6 has already *2, but we need one more 2, that why we write 7*6*5*2*X
(7*6*5*2=420 is the LCM, least common multiple of 2,3,4,5,6,7)
3.
N-1=420*X.
X cannot be 2 or more since N would become larger that 800.
X must be 1, so N-1=420, which means N=421 is the number of coins