Please help with question 9 I’ll give thanks and mark branliest answer

25.61 miles

Step-by-step explanation:

16^2+20^2=c^2

256+400=c^2

656=c^2

sqrt(656)=c

25.61=c

So about 25.61 miles

12?

Step-by-step explanation:

forumla: a squared + b squared = c squared

16 squared + b squared= 20 squared

b=12

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

it is true

step-by-step explanation:

all the combinations add up i used   calculator