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.
Answer:
x = 6
Step-by-step explanation:
Using the Secant and Chord intersection theorem we can say that:
(GE) (FE) = (CE) (DE)
(11 + 7) (7) = (2x - 7 + 9) (9)
(18) (7) = (2x + 2) (9)
126 = 18x + 18
108 = 18x
6 = x
Hope this helps!
Answer:
Option B
Step-by-step explanation:
Answer:
7.89474% decrease
Step-by-step explanation:
Solution:
Calculate percentage change
from V1 = 38 to V2 = 35
(V2−V1)|V1|×100
=(35−38)|38|×100
=−338×100
=−0.0789474×100
=−7.89474%change
=7.89474%decrease
