Generate the first five terms in the sequence using explicit formula

bn=-2n+1
a) 1, 3 5, 7, 9
b) 9 ,7 ,5 ,3, 1
c) -9, -7, -5, -3, -1
d)-1, -3, -5, -7, -9

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !