3x-12= 3x + 7
+12 +12
3x = 3x + 19
-3x -3x
x = 19
Answer:
40%
Step-by-step explanation:
12 divided by 30 will give you 0.4
Answer:
deltamath right? lol understand
Step-by-step explanation:
since there are 5 questions im gonna have to explain it to u.
for this one you need numbers that are greater than or equal to -6. So
06, -5.999999 -5.99 -5.9 -5 -3 -1 and 2 :)
Proving a relation for all natural numbers involves proving it for n = 1 and showing that it holds for n + 1 if it is assumed that it is true for any n.
The relation 2+4+6+...+2n = n^2+n has to be proved.
If n = 1, the right hand side is equal to 2*1 = 2 and the left hand side is equal to 1^1 + 1 = 1 + 1 = 2
Assume that the relation holds for any value of n.
2 + 4 + 6 + ... + 2n + 2(n+1) = n^2 + n + 2(n + 1)
= n^2 + n + 2n + 2
= n^2 + 2n + 1 + n + 1
= (n + 1)^2 + (n + 1)
This shows that the given relation is true for n = 1 and if it is assumed to be true for n it is also true for n + 1.
<span>By mathematical induction the relation is true for any value of n.</span>
