For #5-9 c is the hypotenuse of the right triangle ABC with sides a, b, c 5.
a = 12; b = 5; c= =_13
6.
a = 8; b=
; c= 10
7.
a = 15; b=
; c=17
8.
a=
; b=40 ; c=50
9.
a=
; b=2
c=4

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

the answer is b.)

< 1=< 2

yes

step-by-step explanation: