Find the most important variable in the problem.

There are 13 fish in an aquarium. Seven of the fish are guppies. How many non-guppies are in the aquarium?

A. the number of guppies

B. the number of non-guppies

C. the total number of fish

51840000 cm 2

step-by-step explanation:

well, if it's triangular garden, the triangle could represent the garden.

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16

the answer is $23.63