2 years ago

The formula n(n+1)/2

Mathematics

1 answer:

mafiozo [28]2 years ago

5 0

The answer is in the attached image

You might be interested in

1) any letters can change into an a

Dimas [21]

CAC can be changed into CAAC. This is because the first rule says that any letter can change into an A so
CAC=CAA
The last condition says that when you double , you have to double all letters,
Since A has been doubled,C needs to be doubled too.So:
CAA=CAAC

4 0

3 years ago

Find the value of c using the diagram below

vesna_86 [32]

Check the picture below.

notice that 146° is sitting on a flat-line, and thus it has a sibling linear angle, namely 34°.

now, recalling that a triangle has a sum of 180° for all interior angles, the missing one is 126°, and incidentally that is a corresponding angle with "c".