Answer:
30
Step-by-step explanation:
5=5,10,15,20,25,(30),35
6=6,12,18,24,(30),36
30 is the first number that can be used to divide both numbers
We can’t see the picture it shows a black screen!!
Answer:
20
Step-by-step explanation:
Subtract the 2 from the width of 7, and then multiply the height by the width.
4x5=20
Let

In order to prove this by induction, we first need to prove the base case, i.e. prove that P(1) is true:

So, the base case is ok. Now, we need to assume
and prove
.
states that

Since we're assuming
, we can substitute the sum of the first n terms with their expression:

Which terminates the proof, since we showed that

as required