Step-by-step explanation:
arithmetic sequence.
an = an-1 + c = a1 + (n-1)c
c is in our case 2 (every new shape has 2 more vertices).
we have a a1 = 3.
an = 3 + 2(n-1)
so,
a21 = 3 + 2(20) = 3 + 40 = 43
the 21st shadow will have 43 vertices.
You have 36 roses because you have eight more pink than red so that means you have 22 pink and 14 red. 22 + 14 = 36
Answer:
-3 x-3
Step-by-step explanation:
4-4=0 -3x-3
Divide both sides by their LCD, 2
2/4 = 1/2
1/2 is irreducible
The answer is 220 but you can also write the multiples of all of them and see which one is the same or you can use a LCM calculator. Like I did.
