Prove: The square of a number that is two more than a multiple of 3 is one more
than a multiple of 3.
n +
(3n + 2)2 = [ ? ]n2 +
)
n2 +
= [ ([ ]n2 + [
=
n +
+1
In +
+ 1
1 more than a multiple of 3

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to