Al analizar el tiempo de duración de un grupo de bombillas de alumbrado, se obtiene los datos en horas: 50, 54,57,54,56,58,59,56,56,50
Hallar las medidas de dispersión (rango, desviación media, varianza y desviación típica)

step-by-step explanation:

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

the answer to question 1 is -8, 28.

step-by-step explanation: