Will give brainliest for *correct* answer use mathematical induction to prove the statement is true for all positive integers n. 10 + 20 + 30 + + 10n = 5n(n + 1)

To prove something by induction you need to verify 2 things
1-the base case,2-it holds for n+1
the base case n=1
10=5(1)(1+1) which is true
it holds for n+1
10+20+30++10(n+1)=5(n+1)(n+2)
5n(n+1)+10(n+1)=5(n+1)(n+2)
(5n+10)(n+1)=5(n+1)(n+2)
5(n+2)(n+1)=5(n+1)(n+2) which is true our proof is done.

6hope this ! ! ’

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for