Olivia compró una tarjeta telefónica prepagada de $200.00 Con esta tarjeta, las llamadas de larga distancia cuestan $1.80 por minuto. Olivia usó la tarjeta una sola vez para hacer una llamada de larga distancia. Si el saldo restante en la tarjeta es $156.80 , ¿cuántos minutos duró la llamada?

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)