Step-by-step explanation:
(n + 7)² – n²
n² + 14n + 49 – n²
14n + 49
7 (2n + 7)
7 is a factor, so for any natural n, (n + 7)² – n² is a multiple of 7.
3 tenths = 0.3
1 hundredth = 0.01
0.31 is the answer
Multiplying by 2 then dividing by 3 is the same as multiplying by 2/3 as you also divide by 3, but in one step.
Hope this helps!
Answer:
no
Step-by-step explanation:
45/36=1.25
1.25x18=22.5
not 25
no common factor
so not similar
