Use the mathematical induction to prove that 7^n -1 is divisible by 6 whenever n is a positive integer

Step-by-step explanation:

1) first of all, let s check for n = 1

that s true

2) We assume that this is true for n

is divisible by 6

what about ?

we know that there is a k natural so that

so

then

so

so it means that is divisible by 6

3) finally as this is true for n=1 and if this is true for n then it is true for n+1 we can conclude that is divisible by 6 for n positive integer

7

step-by-step explanation:

yuo ned the activity or vertical angle of the form of 1,7 but 2,2 has a c4,2 as it verticie so i not have a car

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!