Algebra Find the value of each variable using the given chord, secant, and tangent lengths. If the answer is not a whole number, round to the nearest tenth.

15.

17.

19. ;

Step-by-step explanation:

15. (intersecting chord theorem)

Solve for x

Divide both sides by 8

17. (two secants intersecting theorem)

Solve for c

Subtract 169 from each side

Divide both sides by 13

(nearest tenth)

19. (two secants intersecting theorem)

Solve for x

Subtract 25 from each side

Divide both sides by 5

(nearest tenth)

(tangent and secant theorem)

Solve for y

Take the Square root of both sides

(nearest tenth)

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

x=half

step-by-step explanation: