What are the factors of 21?
7,1,3,21
1,4,2,21
1,0,8,4,6
1,2,3,4,5
What are the common factors of 49 and 28?
1 and 7
6 and 9
4 and 7
1 and 28
what is the nth term of 6,13,20,27
4n+3
3n-1
7n-1
9n+5
what is the nth term for 3,9,15,21?
7n+4
n-10
6n-3
5n-9
Find the surface area of one of the triangles. All the triangles are the same size.
31.625cm²
21.908cm²
95.147cm²
11.910cm²
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