Answer:
-72a^3 +108a^2
Step-by-step explanation:
(2a)(6a)(2a-8a+9)= (2a)(6a)(-6a+9)=12a^2(-6a+9)
= -72a^3 +108a^2
Answer:
See answers below
Step-by-step explanation:
Given the sequence
11, 15, 19, 23, 27, ______, ______
nth term is expressed as Tn = a +(n-1)d
a= 11
d = 15-11 = 19-15 = 4
n = 6 and 7
for the sixth term,
T6 = 11 +5d
T6 = 11 + 5(4)
T6 = 20
for the 7th term,
T7 = 11 +6d
T7 = 11 + 6(4)
T7 = 11+24
T7 = 35
Rule used Tn = a + (n-1)d
b) Example of a Fibonacci sequence is 1,1, 2, 3, 5, 8, 11...
The sum of the two previous term of a Fibonacci sequence gives the next term. That is how the sequence was constructed
Line BCE is supplementary, which means its straight or it is 180 degrees. so you take the angle of BCF, which is 63, and subtract that from 180 to get 117, so the measure of angle FCE is 117 degrees <span />