Use the diagram, which is not drawn to scale, to decide which proportions are true. Triangles A D B and C D B share side D B.
I. D B Over D C = D A Over D B
II. B A Over C B = C B Over B D
III. C A Over B A = B A Over C A
IV. D B Over B C = D A Over B A

a.
I and IV only
c.
I and II only
b.
II only
d.
I only

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative